Step 1: Materials/Tools
* Heavy paper, such as card stock.
* Thin cardboard, the kind that's not corrugated.
* Double-sided tape. You might be able to use glue, but I haven't tried it.
* X-Acto knife or box cutter. The sharper, the better.
Step 2: Print and Cut Out Pieces
Note: If you're a fancy pants and have access to a laser cutter, this step is essentially moot. I'm pretty sure you could easily modify the .pdf to use on a laser cutter.