I can so relate! I'll paint my arm all over, when I get in that mood and I just want to play around... my face as well and then someone will come to my door!

I've went out in town a few times with my arm painted up and I think people think they are real tattoos.

When I go to a 2 hour gig, I'd say I throw in about 20 sponges. I always take more than I need and I always have many clean ones left. If it's an event where I'm swamped, I'll reuse sponges that are my most popular designs. Most often, I'll use one sponge per child.