I made a DIY lightbox, and use two flashes; one triggered by radio triggers and the other by slave. I have done macro with it but I can't find one right now but this is how it comes out:
I also have a Macro ringflash, this is designed for macro work:
If you want you could make your own ringflash, I did it with a couple of cake pans from Wal-Mart, I mount this one on a tripod:
