Ask HN: Show Your Homelab and Home Server Setup for Inspiration

I’ve been tinkering with quite a bit of self-hosting and home-lab stuff, starting with a few Raspberry Pis, a 10+ year-old MacMini, and a few laptops-as-servers. I’m willing to make mistakes, learn, and be inspired by what you do. I believe many of us would love your tips, tricks, and all the gotchas in between.