If you have a van you can travel with and sleep in, that would be the thing to do. You may have to look for odd jobs like washing cars or whatever to not go broke and be stranded :)
Try the sites below...1st one is free lodging, next two are lodging and food in exchange for work.
drat, someone beat me to prostitution, well how about making tiny sculptures of chickens out of earwax and selling them on the road
Prostitution, it will keep your wallet and mouth full