Below is a list of components you will need to build your own Pi-hole. If you don’t wan to build your own Pi-hole, you can purchase one pre-built & configured. Purchase one here – https://blacklab.net/product/ubuntu-linux-based-pi-hole/
You must use a 16GB SanDisk Micro SDHC drive to use the image below. Others may or may not work.
16GB Preconfigured downloadable Ubuntu 22.04 image – https://drive.proton.me/urls/QVJJ9ZZPM4#zFYpusj20LOM
Smraza Raspberry Pi 3 B+ Case with Fan, RPI Heatsinks, 5V 3A Power Supply for Raspberry Pi 3 Model B+(B Plus), Compatible with Raspberry Pi 3 Model B, Pi 2 Model B (4 Layers Case)