Glasslinger
I watch many DIY electronics videos on youtube to pick up tips and tricks and just learning how to work with old electronics. There are a couple of posters I watch regularly. I just stumbled upon Glasslinger who makes small triode tubes, Nixie tubes, and repairs various early electronics. Glasslinger is crazy brilliant and entertaining.
Making a Mercury Arc Rectifier
Flashing The Getter
Nixie Pet
Restoring A 1949 TV