2nd Birthday party (INDOOR!) ideas please!?

Most child gyms host birthday parties (gymboree, the little gym). They provide activity and a lot of high energy fun. They also gear it towards your child's age. Chuck E Cheese, Bowling alley (they will put bumpers in the gutters so the little ones have more fun). If you have a local YMCA or other gym or swimming center with an indoor pool, most of them also do birthday parties.