Pi zero 2 runs my home automation smoothly and few of it's sisters are in a desk drawer in case of equipment failure.
It has quite enough oomph to run Home Assistant with zigbee hat.
Wrote excels that controlled building automation and heat exchanger settings, collected water and electricity meter data automatically and created bills ready to print and mail to tenants.That was about quarter century ago.
I print all kinds of usefull stuff.Custom installation panel for after market navigator/media center for my car, upholstery fasteners for the same, custom panels for usb button box, cable organizers for lan cabling, newspaper reading stand, you name it.Might not be financially feasible, but it's fun.
So, are they great yet?