Retrocomputing
Retirement is allowing the time (and, money) to get back to the 1980s. My first personal computer was an Apple IIe Enhanced. My second was a Amstrat PWC 8512. The later had a Zilog Z80 CPU and the former a MOS6502. I can't afford either now. But, I do have a Commodore 64 and I can emulate the other two. So, my retrocomputing project will explore that past instrumentality as a present leisure pursuit. I have a somewhat younger partner in crime for this caper.