I recently facilitated a conversation with new teachers on Assessment. I very much wanted to model what active learning can look like in the classroom and I simply refuse to just talk at people for an hour without involving them in the conversation in some way (as you can tell from slide 2 below).
The format was a riff on an EdCamp classic activity called Things That Suck.
Clear the tables and chairs away. Everyone stands up in the middle of the room, me at the front. My right hand is the "Rocks" side; people stand there if they agree with the statement on the slide. They stand on my left if they disagree; the "Sucks" side. They can also stand anywhere in the middle and change their mind at any time by "voting with their feet."
Each slide is followed by a 5 minute timer. Once the timer starts anyone can call out (I facilitate this part a little bit, making sure people get a chance to speak and be heard) and say why they've chosen to stand where they are. It's always fascinating to watch people walk across the room while listening to someone else because they've changed their mind.
Pro Tip: Get a "collaborator" to play devil's advocate; preferably one of the participants rather than someone seen as a leader. Very Machiavellian, but it works. And it's fun. ;-)
Feel free to use these slides or just replicate the format to foster some interesting conversations with folks where you are. Let me know how it goes.