Give us a reason to explore (for those of us that like that). Randomly placed items, POI's, achievments for finding or using items. (look into the game YONDER as an example.) this is a great game for those that are completionist and explorers.
Have us hunt down extremely rare items to be able to create epic equipment or placeable objects. etc etc.
Just make sure they are randomly placed so we can't just find a map on-line.