Back in 2021 I proposed we build a hotel on the moon where people can strap wings on and fly around, as well as swim like dolphins jumping out of the water.
https://lanseybrothers.blogspot.com/2021/11/fly-with-bird-wings-on-moon-at-icarus.html
https://lanseybrothers.blogspot.com/2021/11/fly-with-bird-wings-on-moon-at-icarus.html
This update isn't actually important - just that now I have a fancy graphic for promoting the idea :)