Once you devour your juicy orange, save the skin.
With a knife, carefully get all the pulp off the skin, as much as you can anyways. Let sit.
The skins will dry after a couple days. Using a food processor, chop/grate the skins and store in a sealed container. Now you have orange zest whenever you need it!
Two of my favorite orange zest recipes:
Pine nut orange cookies
Orange and pecan cookies