I strive to support our local Farmers. When I do go to the grocery store I always opt for organic ingredients and locally grown or produced ingredients; whether it's sugar, dairy, veggies, fruit or bread.
If you haven't taken a peek in your pantry for awhile, try replacing one ingredient every trip to the grocery store. Instead of regular old AP Flour, try an organic version or pack in a few whole grains with Whole Wheat Pastry Flour (organic of course).
I urge you to swap out that shockingly sweet granulated sugar for a sweetener that is a little more nuanced such as Organic Evaporated Sugar Cane Juice or simply an Organic version of sugar. Sugar is concentrated and if packed full of pesticides, then lo and behold the agrochemicals are concentrated as well.