From Northville Parks and Recreation:
Bring your toddlers and preschoolers to their own special drop-in play time. Toddle Time is a wonderful opportunity for toddlers to learn socialization skills through unstructured play. Tots can run, jump, play ball, laugh and giggle with other tots in a big, safe gym atmosphere. Children must be accompanied by an adult for the entire time. Some toys are available however, we recommend that parents bring a ride or push toy. Please bring exact change and pay attendant. No fee for adults.