I know a lot of us teach our kids about guns and I think at a minimum they are all taught the stop, don't touch, leave, tell an adult rules..... while roaming around looking for something to reinforce this, I came across a .pdf that can be printed and colored by the kids......heck even if you don't have kids, maybe you could print it for a friend who does......

http://mcgruff.org/files/findagun.pdf