I've been day dreaming about a outdoor sink for couple years now. I didn't want anything new from the box stores, i wanted something that was made from old cast iron or even porcelaine. functional, barebone and weather proof. I once grabbed a $10 porcelaine sink from habitate for humanity for this purpose but wife didn't approve so that was that, until this weekend.
I found a stainless sink, complete with a nice faucet on the sidewalk, in a rundown part of downtown Los Angeles. It was dirtier than hell, with rusted brackets, 3 dead roaches in the sink and still partically attached to its 8 ft counter. A good kick and the sink was detached. Pulled the rear seats down and 20mins later i was home with a weekend project. (didn't tell wife about the dead roaches until we got home) Couple of couplings, some scrap cedar wood, deck screws, left over woodstain from 3 seasons back, a retired hose and 4 hours; me and the wife made ourselves a new (to us) outdoor sink.
enjoy.