I have: 2x pi4 4gb (bought them previously for octopi and pihole) Pi zero Several old laptops 2x SFF HPs 2x netbooks An old slim workstation

I work as a sysadmin so I’ve picked up a few things that wouldve gone to recycling.

My concern is power draw running 24/7 so I need wattage monitors and going to start with the Pi systems. Until I hit performance issues then migrate to a SFF.