No excuses! Pictures!
I feed either on the ground (usually in a tub if I feed on ground which is rare) or in a small mesh hay net hung lower for barefoot horses and higher for shod horses.
I would recommend metal trash cans for most feed, at least feeds with a smell to them, but something like beet pulp (w/o molasses) could go in a rubbermaid. Make sure you have a door that will keep the horses out and always keep it closed. For storing random extra things, get those clear bins made by rubbermaid I believe, they sell them at target. Have places where you can set saddle pads and blankets out to dry, a few metal/wooden rods sticking out from the wall will do. Have plenty of selves, and a place to mix feed. I would not recommend storing hay in the same barn as your horses, but make sure it is on pallets wherever you store it. You will wnat some sort of sweepable surface to get all the spilled grain etc, off the floor to deter rodents, I prefer concrete or rubber bricks or regular bricks, but rubber mats and the like works as well. Good luck!
“Good things come to those who wait… greater things come to those who get off their ass and do anything to make it happen.” - Unknown