Tap on the ball of yarn to return it to the cat & get a prize. The radio on the bench is a hidden game; so is the beehive. The flashing spot in the dirt is a prize (gizmo) that flies you around the fairgrounds. The wiggling lid on the barrel is a free prize (organ grinder). Don't touch the cotton candy cart. It eats your points.
Look around your park and you can get free items. For example there is a girl on a see-saw. PLay with her and you get a free item (first time only) You can also take a picture in all 6 cutouts or put all the chickens in coops.