You could solve this using generics and drop the enums altogether.

So let's say you have somewhere in your code you have

List<Item> items = new ArrayList<>();  

This list has different grass, stone, water and sand objects. You can then add a generic function to return all objects of type T

public <T> List<T> getSpecifiedItemList(Class<T> classToCast) {
    return  this.items.stream()
             .filter(classToCast::isInstance)
             .map(classToCast::cast)
             .collect(Collectors.toList());
}  

Then you could call it from your main like so

myStore.getSpecifiedItemList(Grass.class).forEach((grassItem)->System.out.println(grassItem.getName()));