I have a few devices that have very valuable information in the Current States fields of the device. I want to display some of the "Current State" information in a dashboard for starters. I also want to be able to use the Current State information to build a rule (i.e. if Current State:Power Draw > 0 then DO X). I'm not sure how to access Current State information in Dashboard or Rule.
In Rule Machine you can use Custom Attribute to get at that data. For a Dashboard you'd have to get more creative, such as using a rule to put the value in a Hub Variable when it changes, and displaying the Hub Variable in the Dashboard.
In addition to @bravenel's suggestion, you may consider to use the app Tile Master.