Sugru is the thing you've been wanting your whole life but never existed. Well it didn't exist your whole life, did it? It just came out last Wednesday!
If you've ever looked starry-eyed upon a brand new virgin packet of Blu-Tack in the store and fantasized about squidging it in your hands and then having it stay in the shape of whatever you designed well then that product is Sugru. And Sugru comes in four rad colors of silicone-rubber awesomeness!
What's even better about this material is the philosophy behind it: repair, recycle, reuse, and their motto, "hack things better." The champion of Sugru, Jane, has hit the ball right out of the park with this stuff. I've never clicked BUY SOME on a website faster!