The Build-A-Bot Holiday Advent Calendar brings 24 days of hands-on STEM exploration, creative tinkering, and exciting holiday anticipation to the Christmas countdown. Designed like a secret inventor’s workshop with numbered daily doors, this engaging advent set lets curious builders reveal a new robot component or collectible sticker each day. By Christmas Day, kids will have fully assembled three distinct, colorful toy robots and collected three fun robot stickers to deck out their notebooks, water bottles, or gear.