UV light is one of the best sterilizers there is fyi. We use it in the microbiology lab.
If I'm exceedingly bored I may try something like this out...dependent on the swmbo of course.
I just checked out that link, it's very much an elementary version of what I was thinking of. However, it's good to see there is something out there, so I might not have as hard a time building as I thought. I'll try to steal some ideas from the lab and see what I can come up with.