What to do with 40 lbs of bran?

So I work as a cook for a small community center, and one of the fun things about my job is that we’re contracted to buy certain staples only through a bulk supplier, and when we put in our order, it’s not like ordering from Amazon where you get pictures of the thing from eight different angles and 300 user reviews so you know exactly what you’re getting. All you have to go on is one line of text, full of abbreviations that are not explained anywhere, so you put in your order and hope that the thing that comes is even slightly similar to the thing you wanted. Also the center coordinator, who is the only person authorized to actually place bulk food orders, has dyslexia. So that’s fun.

I’m only being mildly sarcastic, it actually is a fun challenge to deal with some of the weird surprises that get thrown my way, and today’s fun challenge is: what do I do with a 40 lb bag of bran? It’s, like, the stuff that raisin bran flakes are made out of, only in smaller little granules. Bran muffins, I suppose? What else? I tossed a cup of it into the dough of the sourdough bread that I bake once a week and that turned out fine, but it only used up a cup, and I’ve got 40 pounds of the stuff.

It’s a dry good, it’s not like it’s going to go bad any time soon, but it’s just sitting there taking up space in my pantry so I’d like to find some way to use it up.

What to do with 40 lbs of bran?