Here's a good one, Lisa...pancakes!
6 C. flour (use whatever proportion you like of white flour / wheat flour; experiment to see what your family likes best)
2/3 C sugar
2 T. baking powder
1 T. baking soda
Mix and keep in an airtight container in a cool dry place. To prepare, mix one cup of this with 1 egg and 3/4 C milk.
This is easy to customize for your family's preferences. You can increase or decrease the sugar, vary white and wheat flour proportions, and add in banana, blueberries, pecans, or even some chocolate chips. It's cheaper than store bought and takes no time at all. Plus, you can pronounce everything in there