My idea is to add Office Lens functionality to PowerApps.
It can be either lauching the app on the user's phone or adding Office Lens API to the camera on PowerApps.
This idea came from a project that I'm developing. It can be very useful if you want to scan your receipts or other useful documents that you need. If we take the idea of scanning the receipt and if we join Computer Vision API, with some ML (Machine Learning), we could get all the data from the receipt and create a new entry on Dynamics NAV, for example.