I am subscribed to the World's Best University school-wide email list for the selling and giving away of goods. If you can put up with the volume of emails to your inbox, you can snag good stuff, often free. Given the eclectic set here at this university, there's no telling what technological gadgetry or random widget may come up. Or, there's things like this....
Subject: [Selling] box of 36 large crickets
Ah, just imagine the backstory....