Sugru

Think of Sugru as and adult version of Play-Doh or something that every MacGyver type should have in their tool box.  Sugru is a type of hackers modeling clay that allows you to fix or improve just about anything.  For example you can patch a damaged cell phone, make the ear tabs on a pair of glasses more comfortable, or add some ergonomics to a knife handle.  Creativity seems to be the only limiting factor with Sugru.  Videos and more information about Sugru after the break.

Sugru is available in different sizes and colors here.