The Anatomy of the Human Foot (c. 1510) by artist Leonardo da Vinci (1452-1519) on a key ring. How good a gift would that make?
5cm (2.5″) across.
Buy the da Vinci Human Foot on a button key ring here:

The Anatomy of the Human Foot (c. 1510) by artist Leonardo da Vinci (1452-1519) on a key ring. How good a gift would that make?
5cm (2.5″) across.