[_joel]

Agreed, they're cheap and functional. We have a couple powering a Grafana dashboard and a Dashing one. It's pretty trivial to set them up using Raspbian and create a script that loads the browser full screen and then the dashboard of choice. If you need to display more content on fewer devices then Grafana can also do playlists so that you can rotate content, plus there are some browser plugins to let you automate tab focus (so a few tabs with a dash each and one displayed every 30 seconds, for example).