A few sticks of hot glue........good to repair tents, shoes, jackets and just about anything else that you can think to use it on.......I am now wearing a pair of shower shoes, from the $ store, that came apart the second day that I use them and I put them back together with hot glue......after two weeks they are still in one piece.
How would you melt this without electricty? I really never thought about it before, and I use hot glue for a lot of things. Maybe you could put a stick in a can over a fire?
I personally hardly ever use the glue gun when using hot glue. I just hold the end over a flame and use the stick like a pen to glue the area where you want. And it doesn't make as much of a mess.
I always have a few tubes of super glue or gorilla glue in my bob ...comes in handy i even used to carry a tube with me in my LCE when i was in the Army i must have found about a billion and 1 uses for it. Great Idea!