Use to keep the cover of an old ice cream maker securely attached.
Cut a hole in a piece of cardboard, wrap duct tape around it and get a really inexpensive original looking picture frame.
Tape Nerf basketball hoop to the back of a door because they just don't stay on their own.
Make a pouch and attach it to a door so you can hold stuff.
Repair smashed pumpkin.
Waterproof sun screen for bald men.
Snowmobile/motorcycle seat cover.
Hold broken U-joints together on truck so you can make it home.
Makes a good replacement for chrome.
Patch holes in convertibles or soft top jeeps.