An actual useful dispenser
Pringles tubes can be used to make plastic bag dispensers. This isn’t necessarily an ecological project since the reasonable thing would be to not use plastic bags at all. But, let’s be realistic and assume that we already have a bunch of them at home anyway.
This person has made a hole in the lid to pull each bag out through it, one by one. It’s also possible to make a slot at the base of the can, base, like the make-up remover pad dispenser.