By far my most favorite use is as a notepad that I always have with me. I use a custom keyboard to make typing faster and more accurate.
Anything y’all like to do with your phones that you feel like most people miss out on?
For anyone on iOS, you can do most of this there too. On older iPhones you need a lightning to USB-A adapter you can get on AliExpress for like $3, but on USB-C iPhones it works directly.
The Files app has become like a full file manager, with local storage, unzipping, archiving, SMB connections, as well as most cloud storage services connect to it. Download Keka from the App Store and you can even unpack 7z, ISOs, everything you can do on a desktop.