I have an old Big Board SBC (Single Board Computer) system that (as of a year or two ago) still runs.
Are there organizations of hobbyists who still care about this stuff? Perhaps less likely, is there a museum that might be interested?
[Edit: Based in western US.]
Also, there is this site: http://www.6502.org. Some of the groups are no longer (like the ones listed on G+ for obvious enough reasons) but it is an active community judging by the Twitter numbers.
Keep this guy in mind. He had his labour of love wiped out by the Russian invaders: https://www.npr.org/2022/03/29/1088680989/a-retro-computer-m...