Micro Center is selling the Raspberry Pi Zero for 99¢ as a loss leader. I bought one, then spent another few bucks for a boot disk and a USB-to-Ethernet adapter and a minimal case. Total investment: about $15.
I’m using it as a Pi-Hole machine.
It is fruitless:
to become lachrymose over precipitately departed lactate fluid.
to attempt to indoctrinate a superannuated canine with