List of de-stashing ideas and resources:
I too am in the process of de-stashing my trash, and using that as a source of income to get me on to the road, and hopefully sustain me on the road.
Here is a blog and some videos by some people who have played with this idea:
Wendy & Mikey at
http://www.thegoodlifelab.com/
"Printing shipping labels on the road" - how to's, and battery/recharging ideas-
now granted, they did their thing on a p/t basis during the summer, but the blog and videos give interesting ideas;
they did their trip in a Honda element for 6 months with a dog. I heard Wendy say in an interview that she was convinced that she could find anything her heart desired from the US "trashstream" - stuff people are getting rid of, throwing away, or re-selling cheap.
Also some others, Jay & Ryanne at Scavenger Life, whom I have been following while trying to get my eBay shop up and running:
http://www.scavengerlife.com/p/about.html
Here is a podcast that I want to listen to about deciding to "List it or donate it"-
Her store is "Ryanne's Vintage" on eBay, and they have been experimenting with another storefront, and talk about the numbers on their podcast.
Now, the ones at Scavenger life dont RV, but they do travel abroad and they say their store makes them money while they are gone.
I realize this post is outside link dense ( highlight> right click to go to), but I find them helpful!