Don’t put any coins in this coin box. If you do, it may fall apart… or pop apart! YouTuber まこっちノート (Makkochi Note) created this pensive looking coin box from cardboard, cloth, felt, rubber band, string, and small wood blocks. A hidden mechanism inside the box is triggered when a coin is placed into the slot.

This coin box is even more dangerous. Watch as Makkochi Note carefully tries to dangle a coin through the top.

These ‘dangerous’ coin boxes make great DIY projects. See how they’re made at makkochinote.jimdo.com with the help of drawn diagrams, photos, and Google Translate.

Next, try these fun DIY projects: How to make a coin sorting machine with cardboard, how to make a popsicle stick and rubber band paddle boat, and How To Make Fake Poo, a mini psychology experiment.

h/t Boing Boing.

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