Anything green!! We are doing rice krispie treats with green food coloring this year. Last year we were a little more on the healthy side and did cumbers, broccoli and grapes. We have played St. Patrick's Day word games together or given everyone individual trivia sheets and when everyone is done we go over the answers. I know other people have had singers and dancers come in but I haven't found anyone to do that around here yet. I'm very interested to see what you think of for your St. Patrick's Day Party!