Here's a neat project , adding an oled display to you printer.
It uses wifi, octoprint API and an arduino computer to display head and bed temp, print times, etc.
The monitor sits idle until octoprint connects to your printer then stays activated until the server disconnects, then goes back to sleep.
Less than $20 worth of parts, it's small, provides a print status display using your LAN and only needs 5 volts.