I bought this in 2020 quite cheaply.

I modded this so I can have 16GB of RAM, which is pretty sufficient even in 2020.

I installed docker and tried some experiments on it, like trying to mine XMR etc. Very low hashrate though.

Update: 12/2/2020

I was fortunate to get a M1 MacBook Air for work use. I made my first app using Swift, a source code viewer that you can input a URL to view the source code of. 

The source code is available here: https://github.com/stingraze/source-viewer

Update 12/30/2021

I sometimes utilize my M1 Mac mini by running docker on it and running my web crawler to gather data for my search engine. It is going well. I will try to build a NAS system someday by using something called MergerFS I found via this YouTube video.