gojunebug.com

Makezine has a nice video how to for building a cheap compact DTV antenna so when your out on the road you can get the best reception.  This project only requires some coat hangers, wood, nuts, bolts and washers.

Just go to the make site for video and pdf plans.

edit: Video embed broke the theme.

Not quite a Tiny Travel Trailer but if you like trying out new things while you are camping in the wilderness here is how to build a DIY yurt.