C.L.
Do something simple at home.. we had a few friends over and family and had some simple food. We made it from 1-3pm and at that time DS was taking a nap about 3pm and he made it until 3 and was out.. some stayed a little longer.
If you want something more expensive and easy in a way.. we love Kiddie Klub in Rochester Hills (Auburn/Crooks). They do parties there.