As a design educator a lot of the the research I make is event based, which means documentation is a key part of the research. In the context of my research documentation is storytelling.

Documentation could be:
Photography, drawing, animation, ideation, writing, model-making, and story-boarding.

Things to consider:
How the photos / drawing / obejcts will be displayed (i.e. in a book, online).
How to get permission to use the photos or work from the participants, or how to take photos without identity, that can still tell a story.
How do you document a workshop, and be part of the workhsop process.