ShrubbySoup, we need some more information on what you are looking for to help you!
Cammo CD V-700
GQ GMC-300
The cammo CD V-700 may be quite nice to put in your library and support your nuclear engineering books (depending on your home decoration style, if your wife is pacifist it may not be a good idea)
The GQ GMC-300 Pocket Geiger Counter , on the other side will allow you to play a little bit with it and your computer, but you will need some radioactive material or it may be of little interest. You can get some very cheap alpha emitters here:
http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1311.R1&_nkw=thorium+mantle&_sacat=0&_from=R40I have some more or less similar items... and both serve quite well for their function. ;-)
If you want to do something different, please tell us so we can give our opinion.
Regards!
Eugenio