Besides finding items around the island there is some other ways to get them. When diving in the water you can find shells, urchins, starfish etc. Most of this is used for making clothing. Every morning a crate will come to shore to the right of your home. If a breifcase appears then you will get a piece of clothing. Once you finish making the SOS sign on the beach, you will get a box on a parachute. These items are more for making objects.