Graduation Party Dish

My baby is graduating from BHS!! I have some friends and family coming in May 31-June 2nd. We are having a little party that Saturday, June 1st. I was hoping not to spend too much time in the kitchen while they are here so that I can actually see people who have traveled to celebrate with us. Does anyone have any recipe ideas that they would be willing to make ahead? I don't mind something that has to be heated in the oven. I just know I won't have a lot of time to do prep so I'm happy to offer up Time Credits to anyone that might be interested in making some potluck style dishes for me. I am more than willing to compensate for the cost of groceries. We will have some vegetarians among the visitors so that is something to keep in mind. A dessert is also a possibility. This is something that more than one person could possibly help with and I appreciate anyone who might be willing to whip up a dish for me.