What happens when you open source a conference?, you get an un-conference. I first participated in these last year and found them the most valuable of all the experience and learning I gained. This hold true this year and such is the power of the format it holds the opportunity each and every time to deliver that experience.
Open space techniques are used at un-conferences to help people meet the right people at the right time in the right context. Or the complete opposite, if that is what is required to gain the knowledge to empower our paths forward.
A simple concept at heart. No rules, no cost to participation. I would guess that if such experiences are not in your life right now, they will be real soon, whether that be a rest, work or play.