I built the Convertable Teardrop from the plans I'm sure most have seen on eBay. The build was really simple. Used 4 sheets of plywood and some 1 X 3 boards. The whole build up to this point was 3 weekends and a few nights after work. I wanted a simple camper I could use this year. Took it out last weekend for the test camp since it had reached the "bug proof" stage. Very happy with it. We were worried a 4 foot wide camper would be too narrow, but we both slept comfortably. My wife loves the ability to remove the roof so it feels very open and cool inside. Still think I'm going to need to hook up A/C for those muggy Indiana nights though.
Thanks to everyone, I learned so much from the information on the site. It saved tons of time and answered every question I had before I even started building.
-Mark