Any old laptop and cheap mini PC could do the job. In my case, even though I really like #raspiblitz, I never fully trusted my pi.
Discussion
Yeah, if I had an old lappy. I have looked at old mini PCs but a mixture of apathy and frugality keep holding me back. My node (umbrel on a ras 4) has been running for 4 years with little problem. If Umbrel was open, I'd not change.