So lightbulbs are 3-5 minute intros to a subject of your choice - we're going to have at least one half-hour slot of them during the day.
I think we'll take signups beforehand so we can put things on the schedule, with additional free slots sign-up-able on the day itself.
If you want to pitch an idea for such a short talk, do it here - would be great to have as wide and interesting a range as possible!