I made this as a little present for someone.
I still had a few pieces of the lasercut scrap wood from my internship at Makerbot Industries over the summer and I liked the black/wood aesthetic of my wall clock http://www.thingiverse.com/thing:834 so I decided to make a box with the same stuff.
Print four of the angle brackets.
Cut the wood panels exactly (or as close as possible) in half.
Slot everything together.
You can glue it if you want but it's not really necessary.
I also put little felt feet on the bottom so that it sits nicely.