@monorail Nah, that's not actually anywhere near as hard as actually making the tube
It's actually quite simple circuitry! just two oscillators, one horizontal and one vertical, and coils at not-quite-90° separation (not quite 90° because the "vertical" is actually slightly off vertical so that the scanlines are horizontal; you take a zigzag and angle it a bit until the zigs are horizontal and the zags are blanking periods anyway)