What are some good Canadian-owned retailers to buy electronics, electronic components, and computer accessories from?

I’m talking about things like USB hubs and peripherals, monitors, cabling, and electronic components like you used to be able to get at the Radio Shack of yore. For audio stuff, I go to Long & McQuade, but non-audio? shrug

Ideally, this would be a brick-and-mortar place in the GTA (but outside Toronto proper) but online would be great, too.