Buy a Raspberry Pi Zero – Raspberry Pi
www.raspberrypi.com › products › raspberry-pi-zeroTo get started you'll need: A micro SD card with Raspberry Pi OS installed (see Software). A micro USB power supply (available from you local reseller). A special Raspberry Pi Zero camera cable, if you want to use a Raspberry Pi camera (the standard cable supplied with Raspberry Pi cameras is not compatible with the smaller Raspberry Pi Zero camera connector).