We invite speakers, as others have suggested. Local Police Inspector, County Neighbourhood Watch Coordinator, District Emergency Planning Officer, ACRE Community-Led Housing Officer, Village Hall/Community Centre Chair, the Parish Charity or another local funder, any senior Council officer leading on something currently relevant to the parishes, all village groups and organisations etc. We do a typical AGM-style presentation about the work of the Council and its finances. We tend to avoid politicians, as this can be counter-productive.
Throw in a no-holds-barred Q&A session and hot drinks and nice biscuits and it works for us!