32x32 RGB LED Matrix Panel - 5mm Pitch : ID 2026 : $34.95 : Adafruit Industries, Unique & fun DIY electronics and kits
$29.30 - Full Color RGB LED Matrix Panel - 16x32 - Tinkersphere
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
Adafruit RGB Matrix Shield for Arduino : ID 2601 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
32x32 RGB LED Matrix Panel - 6mm pitch
Overview | 32x16 and 32x32 RGB LED Matrix | Adafruit Learning System
Build an MQTT based RGB LED panel! // Project - MickMake - Live. Learn. Make.