I have always been able to take anything that was an interest or hobby and find a way to make it an income generator. For years I have been making my own hand-sewn journals out of recycled leather, paper, thread and a little Mod Podge. I want to start making my own thread and paper. I'll have time to learn to do that soon. In the meantime, I'll have time to make a few extra journals and sell them. The tools needed are lightweight and take up little space. Supplies wouldn't take up much space either..
I sculpt lightweight pumpkins and jack-o'-lanterns. I have no idea why the fascination with pumpkins aside from they represent Fall which is my favorite season. I'm sure I could sell them. Right now I give them away as gifts.
I make my own simple knitted scarves. Pretty sure I could sell those too. Again, lightweight tools not a lot of supplies.
The more I type this all out the more confident I become as far as the financial part of my wandering life. I'm at a point where I can not continue to work and come home to an empty house. Eats, sleep, wake - rinse and repeat. It's not a life. If I have other means of making the cash I need to survive and be able to enjoy myself doing it while using the work skills and knowledge I have to help people who need it - then why not do life that way?