- in a wall
- as a paperweight
- to keep an elevator open
- as a murder weapon
- for weight training
- as a miniature grave stone
- for practicing long throws
- as a reminder (place it somewhere where you want to be reminded of something, like a knot in a handkerchief)
- as a step-stone to reach the upper shelf
- to keep a button pushed down
- to test how deep the chasm is (drop it in and hear it hit the bottom)
- to prop up whatever
- as a counterweight
- as a fraudulent shipment for something sold on Ebay
- as an anchor for a toy boat
- to train your karate chops
- for cracking nuts open
- as a slingshot (with a rope)
- as a pendulum (same)
- as a hammer (for nails, tenderizing meat, making crushed ice from ice cubes in a bag, …)
- as a digging or carving tool
- practicing to balance it on my finger
- raising the height of my monitor
- for blocking a mousehole
- for milling grains
- for opening a capped bottle
- as a bookend
…I could go on.
I now feel like bragging, but it seems like there’s almost no end to the possible uses.