I wanted to echo this by saying that my lab stated as 4 bay Qnap NAS and evolved into repurposed consumer hardware as my interests and needs changed. My current server is an Optiplex that I bought for being small, quiet, and hanging lots of cores and my NAS is just my old gaming PC build with an HBA card (for extra SATA lanes) stuffed into a fancy case. A server is any computer that you say is a server (ideally one with functional network connectivity).

Agreed! I had a math professor once say that epiphanies usually happen in one of the three B’s: Bed, Bathroom, and Bus. There really is something magical about stepping away to let your brain chew on a problem.