Minecraft wiki entry for Survival_in_an_infinite_desert, associated text: If you are exploring long-distance and not able to return to your original shelter, or have searched in all directions for one day's (return trip) travel from your original shelter, create new shelters along similar lines. Sand, dirt and cacti are your best building materials, particularly for quick portable shelters when traveling, because they are easy for you to destroy (move back into your inventory) without serious tools.