Given as a gift, this puzzle box provides a few minutes of entertainment while the recipient solves the puzzle of how to open the locked box (which they’ve been given without a key). The obvious lock, hasp, and staple misdirect their attention from the secret: nonfunctional hinges and hidden magnets.

Leave the box in plain view on a desk, nightstand, or table to hold small items you’d like to keep inaccessible or unknown to the hoi polloi but readily available to the trusted few.