depends on what season it is..my DD is turning 3 in march and i am having her party at the park...with some 5 dollar pizzas and like koolaide..with a cake and mini take home bags..or if you have a big enouph house just have it there you dont need a riding pony or a clown to have fun..get a pin-yata or play games give the kids time to run around and be crazy like kids do.
Looks like you have a business doing this. Our twins are 5. They have been to a lot of parties with inflatable jumpers. Those seem to be popular. Maybe you could have that as an option (?) If this is girls, they also have been to a party where Zoe did a iron-on rhinestone thingy on a tote bag. She liked that. It was a little different from the usual "goodies" bag.