Keep an eye out at Handicraft Market — you're sure to find some unique curio in one of its many stalls. After you've had a thorough browse of things, try some fare from one of the food vendors.
This Ubatuba Centro community marketplace is an interesting place to begin your day of sightseeing. There's plenty to see in the area, including Itamambuca Beach, Toninhas Beach, and Tenorio Beach. Wander around at your leisure at Handicraft Market before making tracks to these other fine attractions.