Adafruit 2821 Feather Huzzah with ESP8266 Wi-Fi
Adafruit HUZZAH32 - ESP32 Feather Board
Adafruit FeatherWing OLED - 128x32 OLED Add-on for All Feather Boards [ADA2900]
Adafruit 328 Battery, Lithium Ion Polymer, 3.7V, 2500mAh, 2" x 2.55" x 0.30" Size
Adafruit (PID 3213) Assembled Feather HUZZAH w/ ESP8266 WiFi With Stacking Headers
Adafruit Feather Stacking Headers - 12-pin and 16-pin female headers [ADA2830]
Adafruit Breadboard-Friendly SPDT Slide Switch [ADA805]
PARTICLE Argon Wi-Fi Connectivity Development Kit for IoT Projects and Prototyping
FeatherWing Doubler - Prototyping Add-on For All Feather Boards