How to make the best of meetings?

After reading this thread [1] I saw some good advices like: do a meeting on a room without chairs, cost in people hours, meeting with less than 4 people, make an agenda.<p>Do you have any other good hack for meetings?<p>[1] https:&#x2F;&#x2F;np.reddit.com&#x2F;r&#x2F;Nest&#x2F;comments&#x2F;4dbbgh&#x2F;is_anyone_concerned_about_the_future_of_nest&#x2F;