Invisible Ink Pen with Uv Light

A photograph cannot show how the pen sits in your hand or how light it feels when you close a notebook over it. It writes in invisible ink and hides messages until the built-in UV light reveals them. You get five pens in the pack, picked for small pockets and quick notes. The pack works out at just over a dollar a piece.

Keep them where pens belong: a desk cup, a pencil case, the pocket of a school bag. Replace the tiny battery when the light grows dim and keep them away from damp drawers and long spells in direct heat. Treat them like any small writing tool and they stay ready for notes, jokes, or secret lists.