Here’s an idea. I’m looking for a small badge kit, or at least a 5.6" LCD+controller+low power CPU (most likely an ARM). Needs to last at least 16 hours! Resolution on the LCD can be low (320x240 to 640x480). If I can code it or use Linux on a CF/SD card, then I can push out a badge OS.
Edit: The [PICASO VGA/SVGA Graphics controller could be a better choice to drive the screen, as I’ve used it with the 4D Systems 2.81" oLED screen.](PICASO VGA/SVGA Graphics Controller - DEV-08541 - SparkFun Electronics)