I created a flash based trivia game for one of my Skeptics in the Pub events. It used to be wired up to an old keyboard, long wires, handheld buttons, only three contestants at a time. Rather exclusive for the rest of the people attending the event. So, I decided it needed an upgrade.
I took some Staples "Easy" buttons and Frankenstein'd them together with some USB wireless keyboards. The result a custom team based trivia game, with no wires. Since I'm using the same model of keyboard for each button, there is some frequency overlap when the buttons are pressed simultaneously leading to about a half a second of lag. But the system does work. Let me know what you think.
This is a two part video. The second part is linked in the video.