In general, duct tape is the universal temp solution. As mentioned you can fix a problem with a suit case. It can act as a quick fix to a torn hem line or in my DWs case, she had a hook and zipper that seemed to poke into her, so she cusioned it with a piece of duct tape.
It is a nice just in case kinda of thing to have. I actually have a book "The 101 uses for duct tape".
You can also buy flat rolls for easy packing.