These apps / flows are a demo of the 3 tasks mentioned in this challenge by Audrie Gordon -
Challenge Details
Challenge 1. A PowerApp with 2 data sources such that the user can read the data but can't edit it.
Challenge 2. Tracking inventory of PowerApps Swag using Flow.
Challenge 3. Saving a photo to a Sharepoint Document library using Flow and adding some more meta-data to it.