I've seen the footprint thing before. Those look painted on. Best one I ever saw was done with a stencil, started on the floor at the doorway of the room, working the path around various pieces of furniture, then up the wall to the ceiling, and ending at the top of a window. After the child got a couple years older, he requested that the room be repainted without the footsteps. Any fad gets old after a while.
PF