You might have seen the article about how Tetris can help adults with a lazy eye teach their eyes how to work better - here's one of the news links.

http://www.huffingtonpost.com/2013/04/23/tetris-lazy-eye-adult-amblyopia-_n_3141981.html

I want to try and do this on my own, but am not really sure the best way to implement this on my laptop without any fancy equipment. It'll be easy enough to implement Tetris in Python and make whatever changes that need to happen, but I would appreciate some suggestions on how I could split the feed to my eyes without spending hundreds on new equipment.

Ideas I've had so far-

1) 3-d glasses, although the Anaglyph kinds seem to let through both colors

2) Putting a piece of cardboard down the middle of my screen to separate the feed to both eyes... but then they're not looking at the same thing

What sort of ideas do you "real programmers" have?