After the release of Prometheus, craftmaker Steve was so inspired by a tweet by Bad Astronomy's Phil Plait that he went out and constructed his own "Giger Counter" using a half-scale model skeleton (and not other simulcra of the human anatomy). And luckily for Steve, his home made for a poor testing ground:

Here's a video of it in action. Unfortunately (or fortunately, to be perfectly honest), there's not a lot of radioactivity in my house, so this is about 1 minute of me waving the thing around, and it responding by going "bip" occasionally.

Semi-related: The Giger Bar [Via Mad Art Lab]