Tape Case

thingiverse

Here's the lowdown on a straightforward little tool - a simple duct tape holder made of two halves. You snap these halves around your roll of tape like you would with a cap on a bottle. One user pointed out that when the keychain tab wears off, it doubles as a handy tape cutter. As for building this thing, simply scale up X or Y dimensions to about 5 centimeters.