S.B.
It might be too far away from you, but we like Zonkers at the Great Mall in Olathe.
It's about the only thing left in the mall that is open, but it has lots of games, many geared for young kids, it has a soft play area best suited for kids 3 or older and it has about some carnival rides - a train, flying bananas, merry-go-round and even a small roller coaster.
You can get a Toddler pass for kids under 36 inches for about $7.00 that lets them ride everything as many times as they want.