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.
“We’re not talking about the same thing,” he said. “For you the world is
weird because if you’re not bored with it you’re at odds with it. For me
the world is weird because it is stupendous, awesome, mysterious,
unfathomable; my interest has been to convince you that you must accept
responsibility for being here, in this marvelous world, in this marvelous
desert, in this marvelous time. I wanted to convince you that you must
learn to make every act count, since you are going to be here for only a
short while, in fact, too short for witnessing all the marvels of it.”
— Don Juan