For a limited time, every Curiosity Box purchase with charter school or state ESA funding comes with a FREE Multifool—our wallet-sized card packed with wildly specific features that make science, math, and exploration fun.
From kangaroo encounters to black holes, this stainless-steel card mixes practical measurements with tongue-in-cheek science. A playful way to spark curiosity in any setting.
- Kangaroo Safety Gauge — judge when to hop out of danger
- Earth’s Schwarzschild diameter — a pocket event-horizon reference
- Dual protractors — famous building leans & angles of repose
- Average human pinky length & a “relativistic centimeter” ruler (~0.919c)
- Thermometer marking the steel’s own melting point
- “Hello” in 10 extinct languages
- LEGO attachment, bottle opener & a gloriously useless M7.53 hex socket
Offer ends October 15 — while stocks last!
The Multifool will be added automatically to your order.
Recommended age: 12+. Adult supervision recommended. Curiosity Box reserves the right to change or cancel the promotion at any time without prior notice.