Sandbox or Sand pit: A sand box is a great enrichment activity for pigs. They enjoy rooting around in the soft sand. Be sure to supervise your pig to avoid eating the sand. You can hide treats like popcorn or cheerios in the sand and watch them "treasure hunt". Pigs have a very keen sense of smell, hiding treats in the sand allows them to use that super power and satisfy their natural need to root and forage for food.