I hacked together a HDMI e-ink monitor https://barwap.com/projects/okmonitor/

I wanted an e-ink screen I could just plug-in. Versatile, big and cheap. Connection is via a VGA or HDMI. Works like an appliance. All automated. Wireless.

Specifications: 1024x768, 6fps, lag: ~1.2s, Connection: VGA or HDMI Specifications Single Screen: 1024x768, 5fps, lag: ~1.2s, Connection: VGA or HDMI