I put together a little post on how I used the admin connectors to create a list of PowerApps in our tenant, and how that feeds into a Power BI dashboard
Here's the article:
https://www.linkedin.com/pulse/powerapps-using-flow-admin-connectors-manage-your-manuela-pichler/
It mainly focuses on the flow, if you are interested in how I put the PowerBI dashboard together please do let me know so I can write a follow up.
It's also my first write up of this kind, so any feedback is welcome!