Are you wanting ideas for meeting nights or just in general? We schedule music programs for meeting nights to get the parents in. Sometimes it works. Most of the time, they wait in the hall until the meeting is over.
If you want some general ideas, how about a dance?I would say fall festival or carnival, but that takes months to prepare. We also have a parade on Halloween. The kids parade around the neighborhood in their costumes.
Hope these help.

New PTO looking for ideas for the fall. Our school doesnt normally have fall activites, so we thought it would be something new. Looking for any ideas?