Worry Stone
A worry stone is a small rock or stone that easily can be put in the palm of your hand. They often have a worn indentation that is a good fit for the thumb, and by rubbing the stone or otherwise messing with it, it can provide some stress relief.
- Size is about 1.7''x 1.3'' x 0.3''(43x34x8mm)
- Weight: 0.033lb (15g)