Knowing no end of Multimeter repair, I decided to pick up a Keithley 196 I found via eBay, then managed to purchase it privately through PayPal for a song (~$50).
The unit arrived a bit worse for wear, but with some Superglue and JB-Weld, I was pretty much able to repair all the case damage. The power switch also needed some percussive maintenance to get it to work reliably. Visual inspection showed only that one of the two Polystyrene Capacitors (68pf 500V) had been melted at some point. After poking it with a probe, the cap started making a very bad buzzing noise, so I replaced it temporarily with a Silver Mica cap of the same rating.
A friend recently purchased a Pioneer VSX-452 Receiver at Goodwill for $15 without being able to listen to it fully. After taking it home, and hooking up some headphones, and speakers, he noticed the left channel sounded terrible, where the right sounded fine. He mentioned this to me the next day, and I figured “hey, I can fix that”. Especially after just reading a pretty decent book called 
I recently repaired a Dell E173FPb monitor from my wife’s work that would just start up black, with no “2 seconds to black” or anything like that. The common issue with these monitors is the backlight transistors on the power supply shorting. When I got the monitor, I pulled them, and indeed, a pair of them were shorted out, so I ordered some replacements through a pretty highly rated, Chinese, eBay seller. After receiving them, I dropped them in, and it STILL didn’t work. So, I ordered replacement FETs (since testing FETs is a bit troublesome at times), and those didn’t work either. Awesome… so I put the original FETs back, and set the monitor aside for parts.