Shira has a checklist for Purim mitsvot, which focus on the traditional aspects. To complement her list, here is a checklist of supplementary/non-traditional purim practices:
1) Did your community have a Vashti dance to support domestic violence shelters?
2) Did you or your kids if any wear costumes either to shul or otherwise during the day? If so, what did you or your kids go as?
3) Did your community have a purim shpeil? After, before, during, or instead of the Megillah reading?
4) Did anyone give Purim Torah, either at the seudah or elsewhere?