32x32 RGB LED Matrix Panel - 5mm Pitch : ID 2026 : $34.95 : Adafruit Industries, Unique & fun DIY electronics and kits
64x32 Flexible RGB LED Matrix - 4mm Pitch : ID 3826 : $44.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: waveshare 64x32 2048 RGB Full Color LED Matrix Panel 4mm Pitch P4 Displaying Text/Colorful Image/Animation Adjustable Brightness Chainable Design,Compatible with Arduino/Raspberry Pi : Electronics
LED Pixels Matrix Panel Flexible Screen RGB Bluetooth APP Car Advertising LED Sign DIY Scrolling Text Animation Night Light
Amazon.com: waveshare 64x32 2048 RGB Full Color LED Matrix Panel 4mm Pitch P4 Displaying Text/Colorful Image/Animation Adjustable Brightness Chainable Design,Compatible with Arduino/Raspberry Pi : Electronics