Oh I see! You usually do the tattoos at outdoor events! I'm so silly!
Here's another idea. I see you are in Oklahoma, but I don't know where, so this may not apply.
I live in Austin and before the University of Texas women's basketball games, the practice gym is open for the kids to play BB and there is always someone there doing UT type brush on tattoos. The kids LOVE it - my granddaughter gets one every time we go!
I don't know how close you are to OU or any of the smaller colleges in OK, but that might be an idea for you!
Oh and by the way, my youngest granddaughter's name is Emma Grace!!!