Rasputin will let you take a bunch of random hardware (Pi, TuringPI, LattePanda, an old laptop, etc), homogenize them, and allow you to run apps like Home Assistant, Vault Warden, etc. on them. It takes a few minutes to get up and running and has built in DNS, Certificate Authority, Tailnet, Docker deployment, an observability stack, and supports a/b updates. AGPL license.

Basically, I was sick of always having to recreate that stack every time I rebuilt the home lab. Now it's all baked in and flashes machines with a single bash script - managed through the control plane ui.