The "Infinite Resources" you unlock on Island Expeditions work on all work stations, even the story lands! It makes the story missions a lot easier, instead of spending time farming simple mats such as iron or wood. If you are having trouble finding certain resources on the scavenger hunt check list: Use the Echo Flute! It will point you to the nearest unchecked item, with the exception of any animals on the list, since they spawn the same as monsters. Some of the symbols can be a little confusing on the list and do not tell you what they are until you find them - the Echo Lute can save a lot of time and frustration.