If you're looking for a low-maintenace, super-fun party for the 2-and-up set, look no further than Pump It Up.
They will do just about everything from the invitations (not glamorous, but they get the job done) to clean up.
We had our son's 3-year-old birthday there just a few weeks ago, and he and his bouncy friends had such a great time... as did the adults, who are also encouraged to play on the huge inflatables that fill two warehouse-sized rooms in the Urbandale building.
Pluses are the all-inclusive packages and the very organized staff, which makes "hosting" a piece of cake. Minuses are the no-alcohol rule (I know, it makes sense) and the fact that you have to order their pizza (which isn't bad, but it isn't awesome).
We added a little extra pizzaz to the party by having caricature artist Tim Read of 5 Fingers Creative on hand to sketch the kids during the pizza and present portion of the party, which smartly follows the bouncing portion.
He was awesome, and the sketches, which we framed for each of the guests, made a perfect alternative to the party-favor bag.
Tim also did our invitation, which set the tone for the entire event. Check it out: