When I was a kid I remember going to work with my dad. He was a commercial radio producer and at the time computer control wasn’t a thing yet. Everything was done manually and timed to the second. Something I immediately became fascinated with was the nixie clock he had sitting on his desk to help with that process.
For the uninitiated, a Nixie clock is built out of tubes where the cathode pins light grids inside the tube corresponding to a sequence. Normally, the sequence in a clock would be 0, 1, 2, 3, etc however nixie tubes were developed for all sorts of applications and can contain other things like symbols and letters. Typically these tubes were made in Russia or surrounding countries.
Nixie clocks have a somewhat cult following in the maker community and these things aren’t cheap – tubes are no longer manufactured and thus new ones commend a hefty price and used ones are a dicey gamble.
At any rate, without getting into specifics on the electronics projects themselves (more on that later), as I was researching, I came across a Ukrainian vendor https://nixieshop.com that was displaced by the war with Russia. They are back online and are accepting donations. Another vendor I recently dealt with (Elekstube) is also donating 10% towards Ukraine.