Toiletries and Medical Supplies:
don't worry about getting sick over there, the local pharmacies have supplies on everything... I got sick and had to get antibiotics, didn't even need a prescription for that.
Camping/Beach/Outdoor Gear: sun screen, beach towel... ha ha ha!! The obvious!! We didn't burn, because we hardly spent any time on the beach...(I'm not the sun worshipper type of person) we mostly roamed by night or spent days indoors, in Porto Pi shopping.