I generally get my inspiration from https://forums.serverbuilds.net/ mainly the NAS killer posts (the website seems to be down at the moment of posting).

Then I adapt according to my local second hand market. Everything is bought from auction sites like eBay and some parts need patience to find a good price.

Maintenance day is when I log into my server once every 3 month because I forgot it (as everything is working fine).

But I just discovered OpenSuse microOS, while looking at the docs for my laptop Thumbleweed, and now I want to try it with no real reasons. Maybe it is just an excuse to buy a new Raspberry pi.