I used to dive a bit, I was looking for boxes and went in the back of a strip mall that apparently had a game stop and hair saloon out front. Game stop used to flat out throw games and systems away intact, sold quite a few on ebay after testing them. Then they started cutting up the DVD's and would cut the cord on any electric item. Same with the hair place, they'd throw out perfectly good blow dryers and curlers and just cut the cord, I'd splice the cord back together and get them working again. art Van used to throw out perfectly good chairs/end tables ect that had a slight defect.
Times have changed, art van long ago put up a fence around their dumpster, went out looking for a box today and most of them back there were the new kind that lock and compact the boxes, so no more diving there, or even scavenging for a box. Most big stores have the compactors too, but can be a good source for pallets to burn.