Amazon.com: RGB Full Color LED Matrix Panel 64x64 Pixels, 4096 Individual RGB LEDs,Adjustable Brightness,3mm Pitch, Displaying Text Colorful Image Animation Chainable Design Compatible with Arduino/Raspberry Pi : Electronics
64x32 RGB LED Matrix - 6mm pitch : ID 2276 : $64.95 : Adafruit Industries, Unique & fun DIY electronics and kits