To get as many shelters as you want or 99. Go to Gardia Forest in year 600. Explore or take the first left turn then go north then turn right. Here you face 2 choices up or across. Go across, you'll see some rustleing bushes. Both have monsters in them, green & white, the white one will drop a shelter,then leave, (or not.) Leave, then go back to the same spot and the monster will drop another shelter, do this as many times as you want.