I work with decision makers to assess and ascertain the true needs of the group/organization. The next step would be a proposed program that will produce tangible results when applied. Is there an opportunity to help your team achieve better synergy, produce more timely results, develop and demonstrate more trust? There is always the potential to move people to consistent action by sharing tools and solid processes. Things that work if you are willing to do the work.
A 30-40 minute presentation on leadership basics over lunch where I would provide the participants with tools to begin their journey on improving their leadership skills.
I could take a topic that meets your needs and expand it to a half or full day of learning and exploring. At the end of the workshop, participants would have been exposed to best practices with tools and "next first steps" to implement and move them along on their growth journey.