Exclusive Fireflyslime Advent Calendar
Looking for the perfect holiday gift? Our slime advent calendar is back—and it sells out every single year! This highly requested punch box brings 12 days of excitement, with a new surprise waiting behind each daily punch-out window. Starting December 14th, punch through one spot each day to reveal 12 days of festive surprises.
Mystery Box
Love surprises? Our Mystery Box is packed with unpredictable fun which is perfect for slime lovers who want a mix of textures, colors, and holiday (or non-holiday!) creations. No two boxes are exactly the same!
- 8x mystery 6oz slimes: may be holiday themed or not
- 1 Regular NeeDoh (random between blue, pink, or purple), 2x random pop-its, 2 random holiday squishies, Fireflyslime Stickers
Best Sellers Box
Features our top picks of the best-selling slimes of 2025!
- 8x 6oz slimes: Blue Hawaiian Shaved Ice, Cupid's Crunch, Mermaid Cookie Dough, Cupcake Icing, Cotton Candy Dough, Lucky Charms Cookie Dough, Cookies n Cream Frosting, Birthday Cake Fluff
- 1 Regular NeeDoh (random between blue, pink, or purple), 2x random pop-its, 2 random holiday squishies, Fireflyslime Stickers
Holiday Beginner Box
New to slime or looking for slimes with the least mess? Our beginner box includes beginner-friendly slimes that are designed for soft dough-like and holdable play.
- 8x 6oz slimes: Christmas Cake Fluff, Frosted Christmas Cake, Mermaid Cookie Dough, Christmas Cookie Dough, Cotton Candy Christmas, Lucky Charms Cookie Dough, Peppermint Cookies n Cream, Birthday Cake Fluff
- 1 Regular NeeDoh (random between blue, pink, or purple), 2x random pop-its, 2 random holiday squishies, Fireflyslime Stickers
Premium Holiday Box
For our slime lovers! Our premium holiday box includes all of our favorite holiday slimes which includes our expert-level crunchy bingsu and snowfizz textures.
- 10x 6oz slimes: Christmas Cake Fluff, Frosted Christmas Cake, Sugar Plum Fairies, Holiday Cereal, Christmas Cookie Dough, Crushed Candy Canes, Cotton Candy Christmas, Festive Fizz, Peppermint Cookies n Cream, Birthday Cake Fluff
- 1 Regular NeeDoh (random between blue, pink, or purple), 2x random pop-its, 2 random holiday squishies, Fireflyslime Stickers
Value Minis Box
A great budget-friendly option packed with adorable mini slimes and small surprises.
- 7x 2oz slimes: Christmas Cake Fluff, Frosted Christmas Cake, Mermaid Cookie Dough, Christmas Cookie Dough, Cotton Candy Christmas, Lucky Charms Cookie Dough, Peppermint Cookies n Cream
- 1 Mini NeeDoh (random between blue, pink, or purple), 3x random pop-its, 2 random holiday squishies, Fireflyslime Stickers
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Congratulations on your new slime! To ensure it stays fresh, fun, and enjoyable for as long as possible, here are some simple care tips:
🧼 Wash Your Hands
Always wash your hands before and after playing with your slime. Clean, dry hands help prevent germs, oils, and dirt from transferring to the slime, which can make it sticky over time.
🫙 Store It Properly
Slime can dry out if exposed to air! Always keep it in the airtight container provided, ensuring the lid is fully closed after each use.
⚠️ Play With Care
Avoid letting your slime touch hair, clothing, carpet, or any porous surfaces. It’s best to play with your slime on a clean, smooth surface.
☀️ Avoid Heat and Sunlight
Slime can melt if exposed to direct sunlight or high temperatures. Keep it in a cool, dry place when not in use.
📦 Care Card Included
Don’t worry—your order comes with a printed care card for easy reference! Keep it handy to help troubleshoot any slime issues.
Enjoy your slime, and thank you for supporting fireflyslime! 💖
Well received gift. "Very fun. Perhaps a little heavy on the minty flavors, otherwise enjoy all of them."
Great price for a variety of slimes that were wonderful!!
My kids loved the slime advent calendars. Fun to punch through the numbers and high quality slime. The textures, add-ins and scents were great. A couple were a little stickier than I’d prefer, but we still enjoyed. I recommend!!
I bought this for my 10 year old daughter for Christmas and it was by far her favorite gift! First, the packaging was adorable! She smiled and laughed as she punched her way through the advent, she even loved the Christmas squishies and extras! Second, the slime, oh my, THE SLIME!!! Hands down the best slime she’s ever played with! The scents and add ins kick things up a notch, but the textures are what will take you to slime heaven! 10/10 would recommend!!! I will definitely be purchasing more slimes from Firefly Slime!!!
the shipping was unexpectedly fast and my niece LOVES the product!
