silicon valley used to be a great place for the hardware hobby. its still ok but over time, things erode. just this month, a long time staple 'halted (hsc) electronics' closed to the public (seems they are selling it off and resorting to ebay-only, from now on, until its all gone. my guess.)
that place was incredible, for surplus parts, used parts that you'd still want, 'new old stock' stuff, mechanical parts, test equip, wire, a whole wall of TH resistors by value, a whole wall of screws and standoffs. a whole section for SMD reels.
now closed ;(
there used to be haltek, quement, weird stuff warehouse. all gone, now. things are not at all what they used to be, 20 yrs ago.
I think there's a large place in milpitas (excess solutions) that can fill the gap, if they are still open (not even sure).
I used to be able to tell people about all these parts stores, but now they're almost all gone. housing is really overpriced and jobs are not long-term or reliable anymore.
I guess the shine from silicon valley is now gone. its replaced by non-hardware products like bookface and its ilk. this does seem to be a trend.