Use a 'Family Whistle' to Quickly Find Your Kid in a Crowd
by Kristen Mae on Offspring, shared by Kristen Mae to from Lifehacker on (#450RJ)
If your kid is a runner like mine, you know the tension headache that can result from repeatedly swiveling your head to make sure they're still by your side and haven't run off and disappeared into a crowd. Our son Lucas, from the moment it occurred to him his legs could get him places, made it his mission to explore"