This article inspired me to try the same thing with my Nook Simple Touch, I setup the server side script pretty much the as:
I added SSH and set the script to run every 5 minutes using as a cron job. I rooted the nook and installed "Nook Touch Mod Manager" and set it to "Hide screensaver banner" under "configure mod options". I also installed BotSync to pull the updated file every 5 minutes. the end result is in the attached photo.
I am hoping to modify the server script to generate the top half the same but the bottom area first 2/3's (Friday/Saturday) will list my Google Calender events as a list, the last 1/3 will be a current weather status for outside where the sunny/cloud icon is under Sunday, and the middle will be the rooms temperature (pulled from a network temperature sensor. The bottom will be a trash remoinder.