At the end of the party each child takes a turn saying what they think they are. Tell them that there is at least one other person that is the same animal as they are. Go over the clues with the kids until they figure it out and everyone is sitting next to the correct buddy. If you have access to a pony, and parents give their consent, take each child on a little Pony Ride and get a snapshot at the end. Include the picture with their thank you card.
Hay Rides are fun for young and old.
If you can't pull it off have fun doing a Wheelbarrow Hay Ride. Add some hay to the wheelbarrow to cushion the ride and give each child a ride around the yard. If you're up to it, and have a couple of adults, race the kids from one end to the other. If you have older children, divide them up in teams and create a relay race. First team done wins.