I bought the Polly Pockets Wall Party Pet Park for my grand daughters. They love Polly Pockets, but the small pieces on the floor drive everyone nuts. Moving them to the wall is a great idea and the kids love it because there is nothing to pick up.
Unique idea, gets the toys off the floor. My granddaughter immediately dove in to get all the pieces ready to put together and started playing with it right away. I like that you can add to it, providing different play areas, less boredom, provides creativity. Only downside I see is that there are several small pieces which may eventually get lost.