Cut off the top of a tissue box to make an easy toilet paper holder. Glue several smaller, square boxes together if you need a larger holder to store several rolls.
Secure an empty tissue box inside a cabinet door using double-sided tape or Command strips. Fill it with plastic bags and pull them out of the top like a tissue.
Instead of getting up to toss a piece of tissue after each use, use an empty tissue box as a mini trash can. Keep it on the craft table for disposing of small waste.