Non-guitar parts supply catalogs.
My stepfather used to own his own consumer electronics repair business. When I was at his house a few months ago working on an amplifier, I found myself looking through some of the catalogs he had from various companies. None of these companies were guitar related, but between about 3 of the catalogs, I was able to find just about any electronic components, tools, screws, any other odds and ends that a guitar player/tech might need. The only ones that I couldn't find were tools and components such as pickups that were designed and manufactured specifically for guitars. This led me to ask this question:
Do any Jemsite members have some particular favorite non-guitar catalogs or web sites that they use to by things they use in guitar related work and play? Please post some responses.
I would like request that I and a lot of other people here seem to reflexively assume that a poster is from the USA, so please state if your response is contains catalogs or web sites are aimed toward a non-US audence.