One of the periodic irritant$ of building houses is that folks, from neighbors to landscape crews, use your dumpster/construction trash boxes as their personal dump ... but sometimes it pays off:
Last evening someone chunked, into one of my 4 x 8 OSB trash bins, a Craftsman, 1/3 HP, 3400 rpm, dual wheel bench grinder, in _perfect working order_ and with two new grinding wheels. Said tool from the era when Craftsman tools were worth the price, .
It also pays, sometimes in more ways than you anticipate, to get yerass out of bed and be the first one checking out the sites each morning .... :)
Some T9, a little WD40, and that sucker was screwed to my workbench by lunch. ;)