I really need to buy a cereal saver, like the plastic containers that help your cereal from going stale- like in Forgetting Sarah Marshall. Since I don't have one, I had a box of Cherrios go stale. Luckily, with my love of Pinterest, I found a tutorial to make a bird feeder with cereal. See it here.
I don't really have access to a tree like she does, so I just hung it above my patio. No birds have taken a bite at it yet, and I'm hoping their weight doesn't make it warp or fall.