XBee Module - ZB Series S2B w. Wire Antenna, & Arduino shield & USB adaptor

1 x Mega IO Expansion Shield for Arduino Mega - v2.4

ESP8266 ESP-01S 5V WiFi Relay Module Smart Home Remote Control Arduino -UK

Arduino Nano Uno V3.0 I/O Shield Expansion Breakout Board Multi Function Sensor

DF Player Mini MP3 Module with Card Reader for ESP32 and Arduino

Proto Screw Shield V2 Extension Development Board for Arduino UNO R3

Universal USB Host Shield for Arduino - Supports Google Android ADK Devices

Arduino Nano Shield - Expansion Board For Arduino Nano - Free P&P