Overview | PiPhone - A Raspberry Pi based Cellphone | Adafruit Learning System
SparkFun Education - Kits and Materials - Raspberry Pi 3 Starter Kit
Amazon.com: GeeekPi Raspberry Pi Zero 2 W Starter Kit, with RPi Zero 2 W Aluminum Case, 32GB Card Preloaded OS, QC3.0 Power Supply, 20Pin Header, Micro USB to OTG Adapter, HDMI Cable,