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Heat Grove Slime Christmas Advent Calendar with 24 Days of DIY Fun

Regular price $69.95 Sale price$19.95 Save 71%
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NOTICE: This product is one of our bestsellers and is already sold out in our physical store. If the “ADD TO CART” button still works, it means the product is still in stock online in limited quantities.
BLACK FRIDAY SALE
UP TO 70% OFF + FREE MYSTERY GIFT 🎁
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00HRS
:
00MIN
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+ EXTRA BUNDLE DISCOUNT
Mix & match any items
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A gooey surprise every day of December

This advent calendar is made for kids who love slime and can't wait for Christmas. Behind the 24 doors they'll find regular, crystal and galaxy slimes plus glitter tubes, foam balls, fruit slices, soft clay decor and even glow-in-the-dark powder. Each day brings something new to mix in, so kids can create their own one-of-a-kind slime. It keeps little hands busy on cold December days.

Why You'll Love It

  • 24 surprises: A new slime or add-in behind every door.
  • Lots of slime: Regular, crystal and galaxy slimes in many colors.
  • Mix-ins galore: Glitter, foam balls, fruit slices and clay decor.
  • Glow effect: Glow-in-the-dark powder for extra wow.
  • Creative play: Kids design their own custom slimes.

Perfect for: December mornings, crafty kids, class parties, stocking stuffers

We offer fast, free shipping with no minimum order value. Every order can be tracked at any time using its own tracking number.

We offer a 30-day right to return or exchange if for any reason you are not satisfied with your order.

The Heat Grove promise

30-Day Money-Back Guarantee

Try it at home for 30 days. If it doesn't keep you as warm as you hoped, send it back and we'll refund you — no hassle.

Every order ships with tracking, and our team is one email away at support@heatgrove.com.

This winter, cold doesn't stand a chance


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Frequently asked questions

Most of our heaters and warmers give noticeable heat within one to two minutes. Exact times are listed in the product description.

Our heaters are designed with safety features such as overheat protection, and many also have tip-over protection — check the product description for the exact features. Never cover a heater and always follow the instructions.

Plug-in products come with a US-compatible plug or adapter. Car products use the standard 12V outlet found in US cars.

Because you only heat the space or person you need, you often use far less energy than heating the whole house. The wattage is shown on every product page.

Yes, you can return items within 30 days after delivery. Contact us at support@heatgrove.com and we'll guide you through it.

As soon as your order ships you'll receive a tracking number by email.

We accept major cards, PayPal and Apple Pay. All payments are encrypted and processed securely.

Email us at support@heatgrove.com — we usually reply within 2 business days.

Tracked delivery

Every order ships with a tracking number.

30-day returns

Not happy? Send it back within 30 days.

Secure checkout

Encrypted payments via trusted providers.

Friendly support

Real people, quick replies by email.

Slime Christmas Advent Calendar with 24 Days of DIY Fun
Heat Grove Slime Christmas Advent Calendar with 24 Days of DIY Fun
$69.95 $19.95
Holiday Advent Calendar Full of Slime Add-Ins and Decor