There used to be a camper called the Compact 3 on the Design Resources, Design Library tab above. I like the version that has the roof panel that hinges on the front giving expanded head room. It looks like a simple build for a "Standy".
For some reason the Design Library does not come up today. I have the whole plan on my Drive as PDFs, so, if it interests you let me know. Oh, I googled it and it came up here.
http://tnttt.com/Design_Library/Compact%203%20Free%20TTT%20Plans.htm