I saw this was retweeted from the walkingcat, which is a highlight of some UWP built apps / utilities, I’m just going to focus on the interesting projects listed rather than it being UWP / Windows only.
The ones I found interesting were mostly the honourable mentions / unreleased projects:
Another project I found as part of the group project page is WinDynamicDesktop which replicates the time of day wallpapers found in MacOS.