Rather than buy can after can of non-stick spray, invest in a pump mister for oils. You simply fill the container with your choice of oil, pump down on the top, and spray a fine mist of oil. You will be using pure oil rather than a bunch of chemicals. I use canola oil in this one, simply because of its neutral taste, but may invest in a second one for olive oil. By spraying the oil rather than drizzling or tossing food items in oil you will use much less, therefore cutting the calories as well.

I recently paid $9.99 for this one at a grocery store, but probably could have paid less if I had looked around.