We have all of our feed in our sunroom attached to our house.
We have 4 horses (soon to be 5! when our mare foals), as well as dogs, cats, rabbits, goats, chickens, ducks, and a pot belly pig.
There are 12 bins, very similar to what's pictured. Just snagged that one off google. They're all along one wall stacked 6 wide and 2 high.
10 bins hold all of the different feeds
1 has misc supplies, like collars, leashes, extra bowls and scoops, etc.
1 has supplements and dewormers
Inside the supplement bin, each item is kept in its original tub/bag. The bin just keeps them from migrating around the room. Right now, we have goat dewormer pellets, chicken oyster shell, and chicken grit. The horse dewormer tubes are kept in the vet kit inside the house so it doesn't get hot.
Square bales for the rabbits is kept in the rabbitry.
Round bales for the horses/goats are kept (unfortunately) outside, but we buy smaller amounts frequently so it's never left sitting for long.