Universal Qi Wireless Receiver Module : ID 1901 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Wirelessly Powering a Raspberry Pi (with Inductive Charging) and Nyan Cat - YouTube
Reference Design For Wireless Charging Transmitter - Electronics For You
Amazon.com: Miuzei Raspberry Pi 4 Power Supply with Switch, 5V 3A Power Supply Compatible with Raspberry Pi 4 Model B, USB-C Charger Power Adapter for RPI 4B, with Type-C & Micro USB
Wireless Charger -5V/12V 500mA
Wireless Charging | Details | Hackaday.io
Amazon.com: Wireless V5 Bluetooth Earbuds Compatible with Raspberry Pi 4 with Charging case for in Ear Headphones. (V5.0 Black) : Electronics
5 Port USB Wall Charger PD 45W Type C Wireless Charger Station HUB BBC | eBay
PowerUp 3 in 1 Desktop Wireless Charging Stand – Aduro Products
Inductive Charging Set - 5V @ 500mA max : ID 1407 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
10mm Coil Small Receiving Wireless Charging Module Wireless Power Supply Module Chip IC Solution - AliExpress