Building off the “Screensaver Status” menu item, here's a new one I didn't see posted anywhere else which I just came up with this morning. Critiques are welcome if I'm going about this in a suboptimal manner. If my whitespace is not what you are used to, I hope you can forgive me.
Code:
menu_item : main : Screenshot Status : cmd_output : 500 : quiet : grep -q '^Screenshots=true$' "/mnt/onboard/.kobo/Kobo/Kobo eReader.conf"
chain_success : dbg_toast : Screenshots are enabled
chain_failure : dbg_toast : Screenshots are disabled