Exploding Coin Bank

This classic gag purports to be a piggy bank … of sorts. It is a rectangular box with what appears to be a coin slot, often with a quarter sitting on top, and with a warning saying something to the effect of “Insert coin at your own risk”.

The consequence of inserting a coin through the slot? Let’s just say a bit of calamity!
Contained within the box and with its “triggering mechanism” immediately under the coin slot, is a mousetrap. Set off by the falling coin, the entire box explodes into pieces. No, there is no actual explosion – just a bunch of wooden parts (the sides and the top) flying in various directions. Once set off, it can be carefully put together and prepared for the next victim!