I already have a few pieces of test equipment, but well, you never have too much (or enough)
Techtronix TAS475 scope (CRT, 4ch 100mhz)
Fluke 8840A DMM (5 1/2 digit, 2/4 wire resistance testing)
Intek DM8034 DMM, 1000V, 20A, resistance, capacitance, diode, continuity, 4 1/2 digit)
Tenma 72-630 power supply (15V 30A peak)
$350 CAD (about $275 USD) for everything
I have a little Keysight 2 channel scope, but once in a while 4 channel is nice, The Techtronix scope came out right about when I went to university, I think there's a chance I used that very scope in the lab..
A couple benchtop DMM's are always handy and probably more accurate than most of my handheld chinesium ones