my office
it's a i7 7700k with 16gb of ram and a samsung 980 pro ssd.
My play laptop is an Alienware and I have an old Dell 640 to communicate with cars, PLC's etc. (serial ports are a must for some things)
I have an Ubuntu backup server running Samba and using Raid 10 with four 10Tb drives.
My media box/gaming box in the living room is an i7 9600k with 16gb Ram and a 1Tb Samsung 980 Pro also. The display for this is a Sony 55'' Bravia.
My firewall is a Raspberry Pi4.