|The Telescoping Bullhorn - Every Mama Needs One!|
I envision it in several colors, thin and light, so as to fit into purses already overstuffed with receipts, random kid socks and missing keys.
You take it out and press the button for the kid you want it to telescope toward. When it finds them, it opens up like an old fashioned phone mouthpiece and they hear a sweet voice, your sweet voice, asking them calmly to do whatever it was you wanted them to do, say for instance, to come to the car because you're trying to leave. Perfect, right?