This week, I happened to stumbled across this new (well to me at least :P) innovating, inexpensive technique on how to photograph your miniatures. All you need is a camera, a backdrop, mirrors and a miniature (any will do!). What? Where's the lamps?? Who needs lamps when you have the good old sun! Basically you are going to be redirecting the sunlight with your trusty mirrors.
Want to know more? Check out Painted-by G's Tutorial here
So you can forget those expensive lamps and bulbs, put away your fancy light boxes and start using the most natural lighting source there is, the sun!
PS. He also has a good intro tutorial on Photoshop too!