Retiring in 2024 is still an outstanding achievement for a S9, I mean with the crazy last years BTC's difficulty and the low efficiency of the said S9, this was nice for you to be able to still get free sats! (or did you do lottery mining in solo? I would have if I had only 1 S9 with free electricty tbh)

You can sell it for some dollars, the same if the PSU is still decent...
A s9 is not rare enough to be gift to a mining museum.

Where are you located?