When troubleshooting Dashing widgets, I love being able to see what data Dashing really has about various widgets. This really helped troubleshoot the ability to check for stale widget data, among other things.
What I did was create a very simple dashboard called widgetdata. It has this code in it:
Which then creates a dashboard with some global widgets, followed by the raw data of all of the widgets. This list can get long, but I've found it invaluable to be able to search through this data to see what's going on. At the top are two widgets built from prior posts: Marking a widget as stale and Dashing widget to show widget count.