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301: Let It Snow (Code)! A Snowfall Challenge Roundup

A look back at CSS-Tricks issue 301 and the CodePen prompt to turn a single animated snowflake into a snowstorm, scene, or geometry experiment.
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“Can you build on the single snowflake in this week’s starter template to create a snowstorm?” That was CodePen’s December 2022 challenge. Its invitation remains a useful creative prompt: animate falling flakes, add depth, make a winter scene, or explore snowflake geometry.

CSS-Tricks issue 301, published December 20, 2022, is a historical roundup of snow-themed CodePen projects—not a step-by-step tutorial or a benchmark of competing implementations. The examples offer several distinct starting points for a browser-based winter effect.

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Choose the effect you want to create

Light snowfall or a sense of depth

A sparse snowfall can feel calm and minimal. Other examples in the newsletter aim to create depth, making flakes feel as though they occupy different distances. These are different visual goals; the roundup does not establish that one approach performs better.

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Straight descent or varied motion

Some examples explore flakes that travel along non-straight paths rather than simply dropping vertically. This is a way to make motion feel less uniform, without needing to turn the project into a complete scene.

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Aneco 24 Sets Winter Snowflake Crafts Kits Glitter Frozen Paper Tissue Sign Craft Christmas Tree Hanging Decorations for Party Holiday DIY Home Activities
  • Package Includes: this winter snowflake craft kit includes 24 snowflake stickers, 24 self-adhesive baseboards, 6 vibrant tissue paper sheets that can be cut into decorative confetti, and 2 rolls of blue ribbon, each 16.4 feet long; after completing your artwork, simply cut the ribbon to your desired length to create a hanging ornament, allowing for a delightful display of your finished creations
  • Premium Material: crafted with 157gsm thick paper for the snowflake pieces and PVC for the adhesive baseboards, this winter DIY craft set ensures both durability and ease of use; just adhere the sticky side of the baseboard to the back of the snowflake sticker, then affix colorful tissue paper pieces to the adhesive side for a striking effect
  • Winter Theme Design: with 6 unique designs inspired by the frozen theme, in the color of pink, purple and blue, decorated with shiny glitters, the DIY tissue sign craft kit allows you to create beautiful snowy scenes; the combination of snowflake art and vibrant tissue paper colors brings classic winter charms to your space
  • Ideal Size: each snowflake sticker measures around 6.3 inches in width, providing ample space for creative decoration while remaining easy to handle; the included adhesive baseboards are nicely sized to cover and support each cardstock sticker for a seamless crafting experience
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Snow overlay or illustrated winter scene

The newsletter also points to a bookmarklet that applies snow over an existing website. That is an overlay concept; the challenge separately invites participants to build a winter scene. The source describes the bookmarklet’s effect but does not assess its security, privacy, or suitability for production use.

Use the challenge as a creative brief

CodePen’s December 2022 Week 1 Snow challenge suggests building a snowstorm from a single-flake starter, creating a winter scene, or exploring snowflake patterns. It names CSS, SVG, and JavaScript as possible routes and links to examples involving CSS animation, SVG or CSS snowflakes, and a Koch snowflake fractal.

Rank #2
Winlyn 24 Sets Christmas Craft Kits Winter Crafts DIY 3D Christmas Snowflake Bookmarks Art Sets Snowflake Foam Stickers Arts and Crafts for Kids Party Favor Holiday Seasonal Home Classroom Activities
  • 24 Sets Christmas Craft Kits Winter Crafts DIY 3D Christmas Snowflake Bookmarks Art Sets, including 24 pcs blank foam bookmark in 6 cutouts, 24 pcs Self-Adhesive white foam stickers, 144 pcs self-adhesive glitter foam snowflake stickers, 48 pcs self-adhesive foam snowflake stickers, 1 sheet of artificial snowflake stickers, 24 pcs satin cording, 24 pcs clear plastic cellophane bags, 24 pcs silver metallic twist ties, 2 step-by-step instructions, 24 pcs Christmas gift stickers.
  • Color: foam bookmarks and foam snowflake stickers are in blue, royal blue, light blue, and turquoise. Glitter foam snowflake cutouts stickers are in blue, royal blue, teal, and silver. The foam bookmarks are blank, so kids can personalize or write on each bookmark and make it one-of-a-kind. Kids are easy to follow the attached instructions to create their own cute Christmas snowflake bookmarks.
  • Size: Foam Christmas bookmarks measure about 6" long and 2" wide. Foam bookmark shaped cutouts stickers are about 5.3" long and 1.7" wide. Snowflake cutouts foam stickers are about 1" and 1.5" in diameter. Satin cords are about 12" long. Each cellophane bag is about 7.8" long and 2.7" wide. Each twist tie is about 3.1" long. These winter bookmarks are the perfect placeholder in all your holiday books, so you can always come back to the right place.
  • Material: Foam bookmarks and snowflake cutouts foam stickers are die cut from 2mm thick foam, and the stickers come with self-adhesive backing. Satin cords are made of polyester. Twist ties are metallic. Simply mix and match the foam bookmark bases with self-adhesive foam snowflakes to achieve some unique designs. Then tie a ribbon to the top and use these cute snowflake bookmarks to keep your place as you read or to display on the Christmas tree at home all season long!
  • Encourage the little ones to both read and craft with this fun and easy foam snowflake bookmark craft kit. It is a brilliant choice for a classroom winter craft activity or as a kids' activity at a Christmas party or other winter event. Kids will enjoy making their own special bookmarks to mark the pages in their favorite holiday tales or to give away as gifts for family and friends. These cute bookmarks make great stocking stuffers and reading rewards for students.Copyright (c) Winlyn.
  • For falling flakes: explore CSS animation and vary the motion or visual depth.
  • For illustrated flakes or scenery: investigate SVG or CSS shapes and build toward a larger winter composition.
  • For generated patterns: explore JavaScript-driven forms or fractal geometry, such as the Koch snowflake example linked from the challenge.

These are creative directions, not a ranking: the cited pages do not compare speed, accessibility, browser support, or suitability for a live production site. The original prompt is historical rather than a currently running event, but its single-flake-to-snowstorm progression still makes a clear project brief.

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Rank #4
MLOLM 24Sets Winter Snowflake Crafts Kit, 3D DIY Christmas Winter Crafts
  • Winter Crafts Kits:You will get 24 snowflake foam bottom layer 4 designs (5.5 in), 24 snowflake foam sticker middle layer 4 designs (4.7 in), 24 snowflake foam sticker top layer 4 designs,120 pcs colorful craft pom-poms,1 sheet rhinestone sticker,24 root of satin cords,1 roll of adhesive dots.
  • Enjoy DIY Fun:You can easily create personalized snowflake ornament craft , consisting of 4 snowflake of different shapes and colors(blue, light blue, sky blue, cyan, purple, and white), combined with different snowflake stickers, as well as pompom and rhinestone stickers, You don't need an instruction manual,You can freely unleash your creativity and create your own unique 3D snowflake ornament. make it one-of-a-kind. you will have a lot of fun and achievement in the process.
  • Size & Material: The christmas arts and crafts kits foam are made of EVA (about size 4.7''- 5.5''),the middle layer and top layer snowflake foam sticker is die-cut from foam with self-adhesive,Satin thread is made of polyester,pom-poms are made of polypropylene fiber,snowflake craft kit are the perfect party favors!
  • Holiday Crafts:These diy 3d foam snowflake christmas ornaments crafts are perfect for a holiday party, winter craft activity or Christmas party or other winter event, winter birthday party,winter party favors, holiday crafts,exchange gifts, reading rewards,playgroups, Christmas parties, group activities, and other social ,arts and craft project.They're super cute, Perfect for group activities.
  • This winter crafts ornament can be hanged on the Christmas tree or over a mantle lined with candles as a perfect celestial accent,A dazzling and festive addition to your holiday decor. These fun winter and Christmas crafts captures the holiday season with its delicate snowflake design.
Rank #3
Poen 28 Sets Snowflake Suncatcher Craft Kits Frozen Winter DIY
  • Make 28 Snowflake Suncatchers: this package includes 28 sets of frozen window suncatchers kit, include 28 pcs 4" snowflake sun catchers, 4 strip of 8 mini paint pots (5ml per pot), 28 pcs paintbrushes, 1 roll of clear hanging thread (49 ft long), 28 pcs suction hooks; Enough quantity and suitable size for you to use and apply
  • Paint Your Own Frozen Suncatchers: these suncatchers crafts kit features snowflake design and paints in different blue scheme, the pre-cut lines for easy to color, which can bring you so much fun in painting works, just grab a brush and let your imagination run wild to create beautiful winter snowflakes
  • Reliable to Apply: made of quality material, these Christmas snowflakes suncatchers kits are reliable to use, not easy to break, safe to use, just string them together with the fishing thread to create a colorful work, serving as cheerful gift
  • Easy to Apply: just use the paintbrush to paint their cross suncatchers with the color you want, when dry, string it with the clear thread, and then hang them up with suction hooks on window to catch the rays of the sun; The suncatcher paint is sun-through when dry, ensuring beautifully catch and reflect light, providing a charming shimmer that adds a fabulous festive feel to any room
  • Catch the Sun: these snowflake window paint art sun catchers crafts can be widely applied in various occasions, ideal for frozen party, winter party, Christmas party, home activities and more, which can help you catch the sun in any place you want
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