It's really cool and I do have a Pi in "homeprod" since the Debian 9 days (!): my trusty unbound DNS resolver.

For anyone who wants a way more beefy homelab but still at a bargain price, I think it's hard to beat used Xeon workstations. Buy one with a 4-cores Xeon and then replace it with a 20-cores / 40 threads.

It'll run a ZFS tank and shitloads of VMs without any issue: it's made for that.

I didn't pay it $10, more like $200.

I only turn my Xeon server on when I need it (hence the 24/7 Pi running unbound: that one is up all the time and consumes nothing).