Wow nice! I have done the same but I always forget and stick a fork through them at least once a year!
Every time I consider the plastic/stainless pipe option I think about drilling holes all down it and putting a hose fitting on the ends for integrated irrigation… then the project gets to complicated and I stick a 2x4 across instead.
One day though.
Jigsaw puzzles, the bigger the better. It keeps you constantly mentally engaged and the act of reaching for pieces and looking around is good physical activity too. I get back ache if I do a jigsaw session for the first time in a while. It really tires me out before bed and can prevent that rumination before falling asleep. Finally it’s really cheap, there are limitless puzzles in charity shops and even some libraries lend them.