I'll second Litepanels Micro. it's really cheap, light, and nice, it also comes with gels to warm up your lighting to match tungsten or green to match fluorescent ambient.
I personally use the Canon VL10-li II. I have a few of these since they were only 90 bucks or so each.
I don't know if you pay much attention to Japanese Gravure photography, but they often use a color corrected Par38 lamp (parabolic aluminized reflector) on a Gooseneck (flexarm). They will often use these in place or in addition to a reflector.
This allows them to take shots with large aperture to make shots look more natural, especially when the subject is backlit by the sun in a dark room, they use the lamp for fill.
The Japanese method is the cheapest, but you're dependent on plug-in power. I mean a manfrotto heavy duty flexarm, an edison socket, a mount and a superclamp, you've got 90-250 watts of lighting at under 100 bucks.