I board my horse, and he lives in the pasture 24/7. We show, but I blanket/fly sheet him accordingly, so he has no need to be in a stall except the night before a show. He's definitely a happy horse that way! He gets no grain, and lives on grass. Every once in a while, or more often if the grass is low or poor quality, the barn owner will put out round bales for the horses to eat. He's definitely no twig...his weight is perfect.
I'd like to give him some stuff to help maintain his coat through the rest of summer and probably into winter. I'd like to give him some flax seed, some oils, and other basics for horses. Since he doesn't get grain, and anything left out for him in the pasture will be fair game for the other horses, I figure I'll give it to him whenever I go out (nearly everyday in the summer, and a bit less during the winter).
I don't see the point in investing in his own bag of grain, as everything is fine health-wise (great weight, great energy level, etc.), and other boarders would help themselves.
What could I give it to him with? Usually I'll mix it in with a fruit salad (he LOVES fruit salad...bananas, cantaloupe, watermelon, apples...) but if he's getting that every day...I don't know if that would be the best. Especially with the price of produce these days!!