Real-time weather, on your Playdate! As far as I know, this is one of the first practical implementations of the new-as-of-writing Playdate networking capabilities. I can't guarantee any good-practice code in here, but hopefully this helps you make something globe-trotting of your own!
A full list of credits and dependencies can be found here.
If you wanna use this app, it's available for download here. Or, if you just LOVE command line tools, use pdc to build the source/ folder, and enjoy! (You'll need to supply your own weatherapi key; plop that into source/main.lua before compiling.)