Tom (exdh#1) and I flashed one of those machines once when we went out of town to somewhere that had a mall.

. Was pretty funny (or so we thought at the time). Not so funny when my mom found the pictures after. And confiscated them.
I took Lauren into them all the time when we were living in hospital for her chemo and we were actually within travelling distance of a mall. She thought it was hilarious. She was just under 3 years old then, bald as a cueball and laughed her butt off at the pictures. The flash bounced off her head and reflected really badly so it made her head look white as snow. She thought it looked funny. And it did, actually. She kept those pictures on the wall beside her bed until she went into remission and we went home. Then she kept them on her bedside table, and when she relapsed they vanished. Never did find them actually. Hmnm. Wonder what happened to them...