And now we will hand out a little Texan provincialism ironically called Low Cal resources.

ORGs

DorbotPDX A group that just keeps getting better. Technically and otherwise.
PARTS - Portland Area Robotics Society
FreeGeek - inner SE mecca for recycling electronics and encouraging dorks.

EDs

PNCA - The Pacific Northwest College of Art has gallery space and offers a large number of continuing education courses.
OMSI - Oregon Museum of Science and Industry is always a fun and inspiring visit.

COMs

Surplus GizmosGreat resource but in the boonies. Has a web store which is a lot like what the retail store is like.
Norvac Electronics - Don't let the website or the local chain ness fool you! They've got a great, accessible, walk-in store space with a fantastic selection of electronic components and chips in stock. Good, local source for electronics parts and tools.
Cascade Surplus - Way out at 17954 SE Division St, but looks like they have some good stuff, including heavyduty switches like you'd use for a stomp box.
ENU inc - Local computer retailer with warehouse/shops in both Portland and Hillsboro. Good stock, competitive prices, and local.

RIP

Wacky Willys - Gigantic surplus store that carried all manner of weirdness. Moved to a smaller location and has a much smaller customer space before giving up the ghost. Was a great place to get inspired