I have never heard of anyone getting in trouble for having tape and a bottle. If you have a bottle with carbon fouling inside it and an exit hole in the end, you win the ATF's mystery prize.
Um, I have one of those for catching soiled patches as I push them out the muzzle. You need the hole in the bottom for when you poke the patches out of the bottle into the trash can. Lots of people make those up to keep the ness down when cleaning their guns.