Builders Stem Advent Calendar 2026 — 24 Hands-On Mini Stem Kits With Acrylic Charms, Educational Build & Play Countdown For Kids
Real 3D Raised Details: More than just a flat print! Each ornament features a textured, raised 3D front you can actually feel, with a smooth, plain back.
What’s included
- 1x blind box advent calendar in a premium full-colour printed paper box
- Clear blister tray with 24 individual compartments
- 24 acrylic charms, one per compartment
- 10 sets of hanging strings (3 per set): natural twine, red ribbon and gold cord
Size & dimensions
- Box: 7.09 × 10.24 × 1.18 in (18 × 26 × 3 cm)
- Blister tray: 9.96 × 6.89 in (25.3 × 17.5 cm), inner depth 1.1 in (2.8 cm)
- Each compartment: 1.38 × 1.38 in (3.5 × 3.5 cm)
Why people love it
- 24 unique designs, a different surprise behind every compartment
- A daily ritual that makes the countdown part of the fun
- Reusable keepsake ornaments that outlast the season
- Gift-ready packaging, no wrapping required
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