Bay grandkids suffering from birthday party ennui i.e.clowns and magicians, will be thrilled by the alternate celebrations available here. For the very bored babes there are bunny celebrations. For beginner foodies there are cooking parties. The San Francisco Zoo holds its celebration in the Leaping Lemur Café. Musically aggressive kids will love a party with nothing but drumming. Nakedly aggressive kids with revel in a day of paintball. Do you have any other suggestions?