Remember "Marco Polo," that classic call-and-respond swimming pool game? Mari and her husband use it as a way to keep tabs on their kids in public places:
Okay, I know it sounds crazy. We always call out 'Marco' when we're in the store and encourage our son to respond. At 21 months he doesn't really get it, but when he runs off into the clothes and hides in the racks he will holler 'Marco' back when my husband or I do. We play this game ALL the time. Even when they're just an aisle away my husband will ask "Where's Mom?" and sure enough I'll hear our son belt out 'Marco!'. Most people think it's a riot when they hear us, but it sure has saved my sanity a couple of times!