Keynote is a free app from Apple that allows the user to develop their creativity in a style of their choice. The recent updates (March 2018) have led the whole suite of Apple iWork apps to develop in their usage.
Keynote is often seen by many as the equivalent to PowerPoint or Google Slides, however I have personally found that the app is a lot more diverse than that and the next few sections will highlight the additional ways it can be used.
The ideas provided here have been collated from lots of ideas I have either tried myself or been inspired by events I have attended or people on Twitter. The world really is full of a lot of inspiration.