Pi-hole is well-known in the self-hosting and privacy communities, but many people a**ume it requires powerful hardware to run correctly. After looking at how little CPU and RAM Pi-hole actually uses, I realized I didn’t need a full-sized Raspberry Pi or a mini PC. Instead, I repurposed a $15 Raspberry Pi Zero 2 W to act as a dedicated local DNS server and ad blocker. I’d already used one for network penetration testing, so it made sense to deploy another as my local DNS server and ad blocker.