I remember having an argument on whether micros should use LEDs. We didn't really reach a conclusion

well it is a simple and strong to use light source ..so it has potential for micros

And low voltage! Then too, since resistance increases with length and decreases by cross sectional area, holding the bare wire ought to be proportionally even safer for micros.

[after a quick search, listed values on safety information vary, but for eg. the resistance of a hand holding a wire to the battery on the back being ~40kΩ, assuming someone 6ft tall for the listed value, and a micro being roughly 2in tall as depicted, the resistance should be 1.44MΩ, and assuming a 1.5V battery, we would get roughly 1.04μA, a couple orders of magnitude lower than the minimum current to even be perceptible.]

i love the led with battery backpack.

i realy love this ^.^ this wants me to join them and sneak around^^

A childhood fantasy of ours!

i've long been fascinated with Borrowers type scenarios and the idea of hidden little realms in corners and behind walls just out of site, using castoff human detritus as technology

I love the LED / battery backpack