Raspberry Pi Zero W, the low-cost pared-down Pi, with built-in WiFi and Bluetooth
Amazon.com: Screenly Digital Signage Player - Raspberry Pi4 4GB RAM w/16GB SD Card - Plug and Play Setup - Cloud Based Management Software - Full HD WiFi Ethernet HDMI USB-C POE : Electronics
Raspberry pi Zero W : Headless Install
Headless Raspberry Pi Zero W Setup – omar K
Raspberry Pi 2 Complete Starter Kit with WiFi Adapter
Pico Wireless Pack - PiShop.us
Amazon.com: Raspberry Pi 16GB Preloaded (NOOBS) SD Card, Pre-installed, Class 10 - Raspberry Pi Recovery System (1 Pack) 'Packaging May Vary' : Electronics
USB WiFi (802.11b/g/n) Module: For Raspberry Pi and more : ID 1012 : $13.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Pimoroni Raspberry Pi Pico Wireless Pack | Elektor