BTW, that macro box is great for photographing smallish objects. You can get nice, soft, diffuse light with a single light source. Because the sides and top are made of opaque paper, you can fire a strobe or use a lamp to light it and the light source will reflect off of the interior of the box.
Here are other examples from my own box:
As you can see, very soft shadows, evenly lit. Pretty sweet for about 30 minutes of your time to build, and just a few dollars in materials.