I made this as a birthday card for my sister, but it's also a great cheap way to display photos without having to buy a frame. It would also make a lovely personalised bauble or gift box.
Step 1: What you need
The first thing you need is six photographs to make your cube. They will end up cropped square in the middle, so to make sure I got the crop I wanted I used the attached mask in photoshop to make all my images fit the same square.
You will also need a knife, cutting board, double-sided tape (glue if you prefer), metal safety ruler (don't risk fingers!) and something to score with. I used a parchment tool, but an empty ballpoint pen or something similar would probably do. This is to make sure you get a good, clean fold in your prints.