You knew what your group wanted to work on - find out how they have been doing so far, with a quick scaling activity.
Ask everyone to scale between 10 and 1 where they are now between realisation of their hopes and their fears. You can do this on paper, or - better - walking the scale in the room, to generate more energy.
Something comes up in the moment, but you (and probably most of the group) don’t want to devote much time to it for now. Write it on a ‘car park’ chart, visible to all, expressly there to list topics that we can’t or won’t deal with further in this session, but which will be allocated a time and a process for later.
Invite participants each to write a letter to themselves. Then post them out a couple of weeks or a month later as a great reminder of the learning, visions or actions from your session.