I was really excited about this toy and thought my daughter would be too, but sadly, she wasn't interested in it.  I tried using it on her tummy, on her back, sitting up... she didn't like it.  Once she learned to crawl, she used it a little bit as a tunnel to crawl through.  The one thing she did like was the fish that plays music, but she didn't discover that until she was older. … read full review »