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.
Afflicted with an impediment in one’s reach. In legislative
bodies, it is customary to mention all members as honorable; as,
“the honorable gentleman is a scurvy cur.”
— Ambrose Bierce, “The Devil’s Dictionary”