Stewart Park is pretty great , and totally worth the drive to Ithaca. It has:

A new accessible play fort, with ramps up wide enough for a wheelchair

The funniest drinking fountain ever

A spray park!Old school metal playground equipment

Swinging benches facing beautiful Cayuga Lake

Grills for picnics

Carousel in the park, $1 a ride

Tons of parking and clean restrooms

A bat sanctuary