The Cardboard Inventor Lab — 150 Builds in 6 Volumes + 6 Bonuses

~~$126~~ $27 USD · One-time payment · no subscription

Included today:

🧰 150 cardboard builds in 6 volumes
📸 6 picture steps + "How it works" science for every build
🚀 An "Inventor challenge" on every page
🎄 Bonus · 25 Christmas Workshop Builds
🎁 + 5 more bonuses (templates, passport, parent guide…)

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✅ YES! Add Backyard Inventions Get them outside: 20 builds made for the yard, the park and the driveway. Water rockets, a bottle sprinkler, a cardboard marble run for the fence, a bird feeder, kites and more — same 6 picture steps, "How it works" and an Inventor challenge. ~~$19~~ $9

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