Weekly Watch: 8-Bit Keys
While the same fellow has another channel where he covers old computers and gaming equipment, 8-Bit Keys is a channel specifically devoted to old keyboards, drum pads, and other MIDI music making devices. You might think this is strictly for the nostalgia value, but no; it turns out that there are a bunch of subgenres of electronic music that use old MIDI controllers and things like circuit bending and glitching to get a specific kind of unnatural electronic timbre. Old equipment is particularly valuable for it, because they aren't loaded down with error correcting firmware that will try to undo all of your valiant efforts.
8-Bit Keys does both reviews and restoration videos, which are actually pretty informative if you ever feel like trying to refurbish an old piece of equipment to like-new condition.