I flat roll Gorilla Tape on itself, starting with a 4 inch length prior to the first fold. I make my flat rolls between 10 to 20 feet . The 10' flat roll ends at ~4.5 inches and is stowed in a 3" x5" zip seal bag. The outer bag helps keep it from getting raggy or dust stained in your kit Perfect for sm. to med.size emergency and first aid kits.
I also used to take 4 , 11" strips of G Tape and stick them to empty sheets of the plastic like backer paper onto which they put sticky labels. Fold it like a accordion. You can further fold it down in half or thirds, if your careful to insure the tape is well stuck to the backer, at the folds.