Besides the basic electronics, tubes, and transistors. I have a severe fetish or passion if you will, for VFD displays.
some of my friends always called me the "VFD Master"
Because its a tube, and ive always been attracted to its high contrast, blue-green light emissions that LCDs, LEDs cannot reproduce. i prefer a VFD over anything.
Any and all my hobby electronics projects that require a display, use a VFD.
ive made VFD display drivers, VU meters, spectrum analyzers, clocks, etc...
Think im crazy? I do... lol.
I have a youtube channel THEtechknight, that i shown some of this nutty stuff on.
If i could make a 1024x768 RGB VFD display that was compatible with computer TFT LVDS data signaling, i would do it in a heartbeat.