Perhaps you have a pair of those red/blue 3D glasses lying around the house somewhere (if not, see the links below to acquire a pair... or run out and see SpyKids3 if you're the impatient type). Want to put them to use? There are a lot of neat 3D pictures on the web, just do a Google search... but here are some links to start you off.
Note -- most anaglyph photos require red-on-the-left/blue-on-the-right glasses, but some are just the opposite.
Another source for a pair of 3D glasses is McDonalds. Yep, get yourself a kids happy meal and you get a pair. I was lucky I had a pair sitting on my desk already so I didn't even have to get up.