Couple them with Mr. Sunbeam & you’ve got both great entertainment & a doggy exercise device as you make the bright light spot swirl around the room.
Empty paper towel tubes are great for swords with kids or to ‘beat’ the dog with. As a bonus, they like to rip them to shreds once they finally sink their teeth into them…
Toothbrushes are useful for cleaning the grout that is below the tile surface in the shower walls