Here's what I'm up to at the moment:
I recently built a PC for the first time, ticking a 20-year-old item off my todo list in the process. It's a Proxmox box with lots and lots of storage, which will be running a few different workloads, and in particular serve as a playground to apply what I'm learning about Networking at the moment.
I've revived my old iTunes library which sat untouched on an old Mac mini in storage for five years, and I've been having a great time organising new music, and re-listening to old favourites on a 3rd generation iPod nano. This old computer is too out of date to go on the internet, and too old to get OS updates, so I've put it behind a packet filter running on the Proxmox box mentioned above.
I also bought a game called Terraria on a random recommendation and have been pouring most of my free time into it. It's a 2D sandbox adventure game where you can go mining for rare materials, build houses, craft new items and fight bosses, and it's tons of fun.