8yr old laptop (i5-6200U cpu) running a whole bitcoin suite of tools in their own Debian VMs. Easy to snapshot and restore at the VM level and set up regular backups of their data partitions.

nostr:npub1r7psmkr4zv93xnal8un6d8hvmpsn5jvhfzn3kk38rfcel6awznks7znspg said that he went to a talk at TABConf, took a snapshot of his bitcoind VM, f'ed around with it to follow along during the talk, and then just restored it back to the pre-talk snapshot state when he was done. Pretty awesome.

Can even move live VMs running on one hardware device to a different one in the cluster with no downtime. This old laptop is just a testbed, but I'm getting more powerful mini PCs into the mix and should be able to move these over as-is and leave the laptop for more trash-this-system experiments.