I have been looking at purchasing some Sugru since I learned about it some months ago. Sugru is a hand workable silicone putty that air cures in about 24 hours. It becomes a medium hard rubber solid. It comes in small packets of various colors. I purchased mine from Sparkfun as a multi color sampler.
My first use was to cover some exposed wires on the back side of a connector. The connector I needed had no available backshell or strain relief. So I molded a package of Sugru over the connector. This morning (about 12 hours into the cure) it was dry to the touch and felt fairly hard. Will wait the full 24 hours before attacking it with gusto.
All in all I think it is a neat material. Perhaps a bit pricey, but if it works as advertised, I may become a convert. The price would not be such an issue if the stuff did not have a fairly short shelf life of six months. I just will need to think of lots of stuff to use it on to get my money’s worth.
One thing that comes to mind is to cover my thumb drive that hangs with my employee badge to keep the two from clicking together as I walk down the hall. But I think my primary use will be for cable strain relief.
The Sugru website has lots of ideas on how to use it.