A Raspberry Pi. I bought it out of a whim and now I use it as a portable desktop computer, I can use Alpine Linux with my files and my setup on virtually any system that doesn't whitelist MAC addresses.
Especially handy when your university has contracts with Microsoft so you aren't supposed to use competitive software, I feel like I'm breaking the law.
Do you realize that calling it “Koscher” implies that any billionaire would secretly be a Jew? It's antisemitic propaganda.
Anyway, I don't think you got me. I implied that I was plugging peripherals on my Raspberry Pi, working on my university campus with better ergonomics than on a laptop.