http://www.freecycle.org/
this is an email list of stuff up for grabs. I was a member of the Gloucester county freecycle group hoping that someone would offer up an old treadmill (great motors in treadmills)
I found that a lot of what was up for graps was things like baby formula coupons and other items that would serve no purpose to the maker community. However just because i kept striking out does not mean you will! good luck and happy freecycling!