Giggle-Bug
For those kids who wander!!
A cute little ladybug that is hooked on to your child, so that if s/he ever goes wandering, you can easily track him/her down by pressing the button on the parent untit to cause the ladybug to beep.
http://www.giggle-bug.com/
From the Giggle-Bug website:
To find a missing child, the adult triggers the Giggle Bug by pressing the button on the hand-held unit. The Giggle Bug will emit a loud, distinctive but child-friendly “beep” until the child is located and the adult resets the unit. The Giggle Bug range is 75-100 feet indoors and 100 + feet outdoors. Range varies based on environment and obstructions.