Re:
"I've seen an LED map light that plugs into and gets its power from USB.
It seemed to work OK."
That's nothing. Computer Geeks is selling a motorized USB "Aquarium" ....
a
clear plastic "tank" in which motorized fish (or perhaps just a mural of
fish) move, powered from a USB port.
Whule I can see the point of taking power from the computer for an
interface converter, keyboard, mouse, something like that, wouldn't it be
simpler if devices like the aquarium, light, etc had their own mains
adapters? Or is a computer now regarded as simpler than a 5V PSU?
Haven't you guys seen the USB-powered "personal massager"?
I guess it's intended for those late-night surfing sessions, when
your, uhh, _neck_ gets really stiff.
Doc