PostmarketOS is an amazing project that I wish I had the time to contribute to.
I'd love to resurrect my old Nexus 7 (2012) tablet with something more lightweight than the current monstrosity that Android has become. Right now the main thing holding me back from doing that is the lack of LVM support. Either Plasma Mobile or even SwayWM (when it gets gesture support) would be great for a lightweight open device for browsing the web and reading papers.