This thing does wonder with keeping a baby busy
LeapFrog Learn-Around Playground (with Tube Topper) - LeapFrog - Toys "R" Us
And I just bought this one about 2 weeks ago and Adrien LOVES it! He dances to the music, and kisses himself in the mirror. And it is sturdy enough for him to stand with it, because he doesnt sit anymore when he plays with things lol he has to stand.
Little Superstar Sing Along Stage From Fisher Price
We also have the jungle train set, it isnt a huge toy, but it takes up some room. My friends aunt had this and her daughter is 28 months and STILL play with it, definately worth the money.
Amazing Animals Sing & Go Choo Choo - Musical Zoo Train Toy