DIY Dehydrated meals mostly, couple variations of homemade "cookies" (natural ingredients, low sugar, high protein/fat), homemade jerky, dehydrated fruit (easy to do), breakfast blends (oatmeal based with tons of other goodies.). I make a lot of my own food, I feel it helps me perform over time but do bring some store bought food as well.
I would be interested to hear more about your cookies.