Example 1: The local Walmart dumped their shelf of Linksys PAP2's for ten bucks a pop. I donated them to Sploitcast and they were (mostly) given away at this year's Shmoocon.
Example 2: I just picked up an ATI HDTV video card for thirty bucks. I think the little OTA antenna may be missing but the price was low enough to be interesting.
Now my only problem is that I'm running out of slots.