I camp with a slew of kids--sometimes as many as 10. They range in age from teenager to 6 years old. I have seen some crafts using shaving cream and food coloring that I would like to do with them but I do not want to leave a mess on our campsite or cause any harm to the critters that roam the state park. Anyone have any ideas about how bad this stuff is or how hard it is to clean up? And of course, I would welcome alternative ideas besides coloring and the usual things. TIA!