Right now I was thinking about actually writing on the whiteboard with whiteboard markers. But we could also go for an e-ink based system, with pressure sensitivity.

Here is our little MVP roadmap:

1. Whiteboard can display Google Calendar events
2. Google Calendar can show "a whiteboard event" on a day
3. Google Calender can show "a whiteboard event" on a day and time block
4. Google Calendar can show the contents of the whiteboard event, as an attached picture (via a link?)
5. Google Calendar can show the contents of a whiteboard event as text