This is an odd one. Time to be creative and think laterally.
I need to create a device to play a practical joke on someone for a party.
I want to create a spoof lie detector that I can control to give whichever
answer - yes or no - I choose. I'm imagining some kind of base unit with
two different colored bulbs, or maybe just one bulb would also do it, which
I can light by pressing some form of remote device. The base unit would
need to be controlled by battery, as I'm not sure about availablity of
outlets where the party will be (yard).
Anybody got any ideas?