Flour Challenge

We just came back from vacation in upstate NY with family, and my SIL made the mistake of ordering a GIANT giant's portion of flour. The bag was 25 pounds of pure powder.  After I stopped laughing, we decided that we also would buy a 25 pound bag of flour and we would spend the next 3 months trying to find creative ways to use it.  I'm a huuuuuge sucker for challenges!  But now I am looking for some ways to burn though a toddler bag of flour.  So far, we have pancakes. And the list ends there.