I already feed him out of a slow feed net, it does help, but when it goes empty he starts in destroying things. I can't afford to feed free choice and he gets morbidly obese if I over-feed too often. During the day he's not so bad because he plays with the other horses, but at night everyone eats separately and are penned separately so the minis don't hog all of the food.
Any Ideas on how to keep my horse entertained at night will be greatly appreciated! Inexpensive ideas will be appreciated even more.