I shill for ThinkGeek so much I’m waiting for a paycheck, but they just have the greatest stuff. Tell me this wouldn’t be an awesome shower curtain / bath mat set for your guest bathroom:

I also think this is a stellar idea. Basically, you can add a little extra monitor that runs off your USB port, no external power cord. So you could conceivably add as many extra monitors as you have USB ports! They’re small, but it could be good if A) you have a laptop, or B) you have a lot of them. They could also be useful to keep up certain apps like instant messenger or winamp.