Now I haven't put any of these out there or haave yet been out to find one. I think its important to relize ones person trash is anothers treasure. I personally would love to find the odd stuff. Old stuff as in what your talking about. Everyboody takes something different from doing this. What you get out of iisn't what everybody is going to get out of it.
If you really want to read something . Look up burning man and what they call giifting.
Just my two cents anyways
Brendan