Cut the blocks at home over Thanksgiving. They're a little over one inch, because that's what I happened to find in the shop.
Wood glue on top. May not be the best glue, but of what else I had (rubber cement, gorilla, paper stick), it seemed like the best.
I trimmed the edges by turning it upside down on my sheet glass (from a picture frame) and cut it with a razor.
Run the razor down each joint, and separate the pieces. Make sure to separate them, since otherwise the wood glue would make it a pretty lame puzzle. Less puzzle, more blocks of wood glued back together with a picture stuck to them.
It's the last picture! Unfortunately, some of the paper got a little soggy with the glue, so make sure to use heavier paper or as little glue as possible.