Cheap DIY Hay Feeder

Horse Hay Feeder Made From A Few Bits Of Wood And A 1 Ton Sand Bag

Used, discarded 1 ton sand bags are everywhere, on every building site, and make ideal hay feeders. Simply make a frame and hang the sand bag over the posts. The one above has been in service now for 2 years, with the same bag.
You can lower a rail on one side if you are feeding horses of different heights.