Arduino Stackable Header Kit - R3
SparkFun Qwiic Shield for Arduino
Adafruit Motor/Stepper/Servo Shield for Arduino v2 Kit - v2.3
SparkFun ESP32 Thing Plus DMX to LED Shield (Feather Compatible)
Arduino Stackable Header Kit
Adafruit "Music Maker" MP3 Shield for Arduino w/3W Stereo Amp - v1.0
MIDI Shield
RGB LCD Shield Kit w/ 16x2 Character Display - Only 2 pins used! - POSITIVE DISPLAY
XBee Shield
Adafruit 2.8" TFT Touch Shield for Arduino w/ Capacitive Touch
Adafruit 16-Channel 12-bit PWM/Servo Shield - I2C interface
Adafruit PN532 NFC/RFID Controller Shield for Arduino + Extras
Electric Imp Shield
Ethernet Shield With PoE Module
MP3 Player Shield
SparkFun Arduino ProtoShield - Bare PCB
Adafruit AirLift Shield - ESP32 WiFi Co-Processor
SparkFun Simultaneous RFID Reader - M6E Nano
RS232 Shield V2
USB Host Shield
SI4735 AM & FM Receiver Shield
WiFly Shield
Spectrum Shield
Adafruit Bluefruit LE Shield - Bluetooth LE for Arduino