At the other end of the spectrum from Mr. Hell's B&D box:
I've been pleased with the field box kit from Sidewalk Flyers -- quality materials and a well thought-out design. It *is* on the large end, I'll admit. But does have a detachable power unit so you don't have to haul all your tools to the flightline to start your engine. If you're into a little carpentry, this might meet your needs.
Check the thread from a year ago (some of the image links are dead):
http://www.rcuniverse.com/showthread...hreadid=126656
Or go to their website and order one:
www.sidewalkflyers.com
pjww