HiLetgo Multi-Function Shield ProtoShield Multi-Functional Expansion Board Sensor Shield Module with Four Digital Display for Arduino: Amazon.com: Industrial & Scientific
Amazon.com: Adafruit Music Maker MP3 Shield for Arduino w/3W Stereo Amp : Electronics
Amazon.com: Adafruit Assembled Data Logging Shield for Arduino : Electronics
Amazon.com: L293D Drive Module Motor Drive Shield Expansion Board Motor Control Board Compatible with Arduino UNO Arduino Mega 2560 Duemilanove Diecimila 2PCS : Electronics
Amazon.com: Arduino Motor Shield REV3 [A000079] : Electronics
Amazon.com: RS232/RS485 Shield for Arduino : Electronics
Amazon.com: HiLetgo 3pcs Arduino Sensor Shield V5.0 Sensor Expansion Board for Arduino UNO R3 : Industrial & Scientific
Amazon.com: Adafruit Assembled Data Logging Shield for Arduino : Electronics
HiLetgo L293D DC Motor Drive Shield Stepper Motor Drive Shield Expansion Board for Arduino Duemilanove Raspberry Pi: Amazon.com: Industrial & Scientific
Amazon.com: Arduino 3D Printer kit Sevenmore CNC Shield + UNO-R3 Board + 4 X DRV8825 Driver Kit for Arduino 3D Printer : Industrial & Scientific
Amazon.com: SunFounder Ethernet Shield W5100 Compatible with Arduino UNO R3 Mega 2560 1280 A057 : Electronics
Amazon.com: Arduino Motor Shield REV3 [A000079] : Electronics
Amazon.com: HiLetgo 2pcs UNO R3 Proto Shield Prototype Expansion Board with SYB-170 Mini Breadboard Based for Arduino UNO R3 ProtoShield : Industrial & Scientific