Small 1.2 8x8 Ultra Bright White LED Matrix [KWM-30881CWB] : ID 1613 : $7.50 : Adafruit Industries, Unique & fun DIY electronics and kits
In-Depth: Interfacing MAX7219 LED Dot Matrix Display with Arduino
Amazon.com: ALAMSCN MAX7219 Dot Matrix Module 32x8 4 in 1 LED Display Modules for Arduino Raspberry Pi Microcontroller with 5Pin Wires Red (Pack of 2) : Industrial & Scientific
Meinberg VP100/20 LED dot-matrix display Røde tall. Viser ukedag, dato, klokke - Adeptor AS
An Impressively Large LED Matrix | Hackaday
MAX7219 large dot matrix 2088AS drive display module 60*60MM dot matrix microcontroller control drive board
LED Matrix - Tri Color - Large - COM-00683 - SparkFun Electronics