a place i use that has some of the "odd" stuff is
Marlin P Jones
mpja.com..
odd switches, tools power supplies, connectors etc. surplus type stuff also.
MCM for tools and audio and video struff ..
mcm.com
I have had "allelectronics" catalogs butits been a while. surplus type stuff.
I am a big fan of reading the ADS in magazines........
learn a lot there.
I rmemeber as a kid on the farm, i read the ads in all the farm magazines.
amazing what it does for your vocabulary..