Raspberry PI 4 x3 (fourth one used as a sandbox and as an ansible controller)
Switch 1GB 5 ports
Rack raspberry pi 4 slots
USB Power Switch
Power wire for switch (to use on the USB switch)
MicroSD card 128GB x3 (fourth for the sandbox)
USB-C wire (raspberry pi 4 power)
RJ45 wire (raspberry pi 4 network)