Hi Valerie:-) If you give us a few more details, maybe we can come up with some ideas for you. Between what times are you having the open house? How many people do you estimate will be in and out of your house? Will they be attending other celebrations where food is served as well? Do you want finger food or something more substantial? Do you want it to be casual or more fancy since it's a graduation celebration? Do you want hot, cold or a combination of hot and cold dishes? Let us know and we'll try to help out.