Look at the Electronics Flea Market at Fry's in Sunnyvale
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This swap meet is so good, it's the only reason one of my coworkers hasn't moved out of California for the past six years.
http://www.electronicsfleamarket.com/
I've never been, so I don't know what to expect, not how long it'll take to look around.
It starts at 5 (five!) AM but I'm definitely not awake then, so let's meet at 7 AM.
The flea market is organized by an amateur radio non-profit. August is the second-to-last time the flea market will happen this year.
It's free and there's free parking.