Sugru Mouldable Glue
Sugru is the world's first mouldable glue. It sticks permanently to lots of stuff like ceramics, glass, metal, wood, and most plastics and fabrics.
Just push it onto something, then it’s time to build, seal, fix, create and stick things together. You’ll have 30 minutes to get the job done. Give it 24 hours, and Sugru turns into a durable, flexible silicone rubber that stays stuck (unless you remove it).