Have you looked into an M1 or M2 Mac Mini? They are excellent performance for the money and you could either use macOS (it’s a genuine certified BSD-flavored U

Have you looked into an M1 or M2 Mac Mini? They are excellent performance for the money and you could either use macOS (it’s a genuine certified BSD-flavored UNIX) or Asahi Linux. They also appear to support OpenBSD and NetBSD, although I’m not sure how well.