Waveshare and Pimoroni have some that work well with Raspberry Pi, if they're in your budget. I built a Waveshare epaper display + Pi Zero into a photo frame fo

Waveshare and Pimoroni have some that work well with Raspberry Pi, if they're in your budget. I built a Waveshare epaper display + Pi Zero into a photo frame for a totally different project. Your idea tempts me.