The 84th INMA World Congress began Sunday with a series of rapid-fire “Brainsnack” sessions.

Intended to share great ideas in a short amount of time (seven minutes, to be exact), “Brainsnacks” challenge the World Congress to focus on what makes an idea work and give the audience ideas on how to implement innovations.

Audience members were asked what “Brainsnacks” made the biggest impression and what the biggest lessons were from the day. Here’s what they had to say: