Another cool place to visit is the RE-PC on 6th street in Seattle, where they have a small retro computer museum. Years ago I got to watch the old guy who ran the place boot the PDP-8 there by toggling the boot code from (his) memory using the switches on the front.
There's also a re-pc in tukwilia near sea-tac with a small museum section. The unaffiliated recycled PC store in Tacoma has a bit of a museum section too, although a lot less inventory.
I still miss weird stuff in sunnyvale, but this will have to do.