8x8 88 RGB LED Matrix Module Driver Board + Full Color Rainbow V2.0 Mini Dot Matrix RGB LED Driver Shield for Arduino AVR: Amazon.com: Industrial & Scientific
Amazon.com: DEVMO L293D Motor Drive Shield Expansion Board Compatible with Ar-duino Duemilanove Mega UNO R3 AVR ATMEL : Electronics
Amazon.com: HiLetgo 3pcs Arduino Sensor Shield V5.0 Sensor Expansion Board for Arduino UNO R3 : Industrial & Scientific
HiLetgo Multi-Function Shield ProtoShield Multi-Functional Expansion Board Sensor Shield Module with Four Digital Display for Arduino: Amazon.com: Industrial & Scientific
HiLetgo L293D DC Motor Drive Shield Stepper Motor Drive Shield Expansion Board for Arduino Duemilanove Raspberry Pi: Amazon.com: Industrial & Scientific
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 Motor/Stepper/Servo Shield for Arduino v2 Kit : Electronics
Amazon.com: Velleman VMA05 I/O Shield for Arduino, 1 Grade to 12 Grade, 2.75" L x 2.16" W x 1.18" H : Electronics