Durable and easy to assemble are the highlights of this Playskool toy. Otherwise, it's had it's 5 minutes of fame in our home, and likely will be stashed away while my young sons play with other toys they find more amusing. My boys are 8 months and 2 years old. The 2 year old likes to run around with the balls best, and finds the rest of toy less than engaging. My 8 month old has been amused with the music playing, and may become interested in turning the gears--that is if the toy even still interests him in the near future. The gears turn well and they stack easily, but they don't DO anything. Turning the gears doesn't make the music turn on, or make the balls drop. The balls must be manually dropped down, and all they do is drop. When they drop, they don't cause the music to turn on, either. Only pushing down the red smiley face on the right corner makes the music go. If pushed far enough down, the gears will also turn. If the gears played more of a role in causing the music to play or the balls to roll, I probably would have rated this toy better. As it is, the elements are not related to each other at all.
Overall, save your money for other toys which will likely get better use.