DUCT TAPE! I love Duct Tape. Two essentials in life are duct tape and WD40. If it's moving, duct tape will hold it, if it's not moving, WD40 will get it going.
Right now I have duct tape holding the plastic trash bag over the hole where my rear passenger side car window used to be. (I keep a roll in the car for when the bag blows off going down the highway) OMG, I'm such a redneck.
You can also make a really cool hammock when you are camping with a roll or two (depending on the size) of duct tape.