Im new and have yet to bind a quilt but my 1st thought was the office supply clips.... the "new and updated" version of a paper clip. I have been sewing for eons and have used them for many projects. They stay put, undo easily and can be real cheap! I have found many diff sizes at dollar stores and just stock up when i find them. The bigger ones hold 3"-4' thick ream of paper without moving. So they will handle a thick quilt.
Just make sure they dont get "stolen" from the family for other projects!! hehe especially kids doing reports. :mrgreen: