Bend it, shape it, anyway you want it - DIY with Sugru
Sugru is like plasticine, except it contains Methyltris (methylethylketoxime) silane and Gamma-Aminopropyl Triethoxysilane and is a malleable, silicone based material that bonds to nearly any other material and begins to cure and harden after half an hour. So nothing much like plasticine at all. What the hell does all that mean, then? Well, you can use it to repair stuff, improve stuff or - essentially, hack stuff.
It comes in five colours and costs £7 a pack (although they've already sold out of their first order) - and is something else to stick in that kitchen drawer that's full of crap along with the envelopes, unopened ball of string, coasters and expired prescriptions - except you might actually get some use out of this: