Mrs. R. took the girls to Disney on Ice (which is not, as I believed, a display of Walt's cryogenically frozen brain), where upon admission they received wristbands that light up when you press a button. Rivka, 5, needed to call me on the cell immediately.
Rivka (After explaining the wristbands at length): So, can you make them into walkie-talkies, so we can talk to each other on them?
Me: Um, I don't think I can do that, but you can use your imagination.
Rivka: But you have computers.