Can't believe I couldn't find a current thread on this. I know quite a few of us dig through the local thrift shop hoping to find the one decent board in the pile of Quiet Keys and MS Naturals.
Anyway, post your in-person finds, be it Goodwill, Weird Stuff, garage sales, etc!
I'll start us off with these Alps boards I found at a hole-in-the-wall computer store in Oakland this morning.
NIB (bag, no box :/) Omnikey (white clicky Alps)
Dell with black tactile Alps