no affiliation, just looks like something that might come in handy somewhere...

http://sugru.com/

Sugru looks pretty useful but appears to be very expensive for what you get, could be useful for making my Mod4 Survival knife a little more comfortable around the guard though.

I have previously used Dow Corning 3140 RTV and 2 part epoxy to make some running repairs that have lasted. Many adhesives and glues are a complete let down and don't live up to expectations unless you know where to go.

http://www.youtube.com/watch?v=58zzs4hzEIg

It also only has a six month shelf life before curing according to the web site.

That's not as good as the Sticko Extra in the video! Judging by the newspaper its been around a good 90 years in safe storage..

sugru can be made at home - take a look at diy sugru