One of my favorite techniques that I took back from the BugShot 2011 workshop was studio lighting using a white box. And since I had my white box out today, taking portraits of my blood python (Python curtus curtus), I figured that I’d show you all what I do! This is probably terrible photography advice that you should feel free to ignore, but maybe some of you will find it helpful.
Anyway, this is my setup:

It is a box. That is white.
Basically, this consists of a frame made of copious amounts of plastic dowels, and also an incredible amount of masking tape. The top and bottom are white poster board, while the slides consist of plain old printer paper. And masking tape.

No, seriously, LOTS of masking tape. As much as you can possibly spare.
Inside the box, I use the flashes from my Canon Macro Twin Lite to bounce off of the sides, producing nice, even lighting. I also have a flashlight as a focusing light, upside-down drinking glasses to keep my flashes in place (I believe in hi-tech solutions to my problems), and a very angry snake. (Also some cat toys. I’m not sure why those are there, but they’re probably important.)

Snake with beady death glare
The most challenging part of this is figuring out how to get the lights positioned so that my light sources will be where I want them to be. I have a little foot that I can mount my flashes on for some extra flexibility, and I’ve also built cheap little platforms to move them around the box, but it can be a little tricky to get things just right.
My normal setting for this kind of a white box is a pretty high depth of field (around f/22) combined with powered-up flashes (one flash head is usually at full power, the other at 1/2).

And this is the result
There are things that I don’t like about the setup. It doesn’t have a clean bottom edge, so my subjects have to be in the center of the white box, and dealing with my flashes is occasionally the most frustrating thing in the universe, ever. It can also produce some really wonky-looking reflections in my subjects’ eyes.

Such a cute face. Such an angry snake.
But, it was super cheap, and it’s flexible enough that I can mess around with it in a bunch of different ways to create new effects — I can substitute different colored papers for backgrounds, bring in the sides to create a smaller white box, and I can disassemble it pretty easily to take into the field. (As long as I remember to bring masking tape!)
Oh, and it was also cheap enough that I won’t ever feel bad about my lost investment if I do decide to scrap it and start all over again.