One of my side projects that's just for fun, PatioPi, officially has a purpose! I already have a page up with more information on PatioPi, but I'll save you a click with a tl;dr.
PatioPi is a Raspberry Pi that's connected to a battery pack and Wi-Fi, sitting on my patio, and running the web server that hosts the website patiopi.com.
I've recently added some self-hosting guides to PatioPi, so if you've ever been curious about how to self-host a website on a Raspberry Pi, PatioPi can now help you with that!
Eventually I plan to add guides that cover all sorts of self-hosting topics, but for now it's primarily focused on self-hosting a website on a Raspberry Pi.