Go to the petting zoo at FW. My kids had a great time there, and best of all it was free! They also offered pony rides for a couple dollars a piece.
Also, in the evening FW has a campfire and sing-along with Chip and Dale. After the sing-along they show a Disney movie. Again, a fun time and it's free (except if you choose to buy stuff to make smores, they sell it at the campfire)