Yes I love those little devices. With the first versions, they mostly ended up in some drawer after some tinkering. But the version 3 and 4 are very capable little gems that I use for various computing tasks now.
Although it is rather easy to obtain real server hardware, the power requirements stop me from running anything on a permanent basis at home. Instead, I run a rather low power Synology for storage and a collection of Raspberry Pi devices for small computing tasks. This is summary, for your perusal and as documentation for myself
tampere
A RBPi4 with 8 GB RAM and 512 GB USB connected SSD. Running Raspian as OS. Tasks:
- Running isc-dhcp-server that handles static mappings between mac addresses and IP adresses (IPV4)
- Pihole DNS blacklister
- Home Assistent instance to measure power/gas usage using a USB to P1 cable.
- Wireguard VPN access from outside home
paimio
This is a RBPi4 with 4 GB RAM and a SSD for storage. Running Rasberri PI OS. Tasks include:
- Gitlab runner
- PXE bootserver
pello
This is a RBPi4 with 4 GB RAM. Running Ubuntu 21.04 from USB stick
Tasks:
- Available for new projects/Currently in storage
turku
This is a RBi3 with 1 GB RAM, a sdcard for boot and 8 TB disk for storage. Running Ubuntu 20.04. Task:
- Available for new projects/Currently in storage