Don't throw the edges away; freeze them and occasionally boil them down with water to make ... well, anything really: tea (with lemon, for an upset stomach), so

Don't throw the edges away; freeze them and occasionally boil them down with water to make ... well, anything really: tea (with lemon, for an upset stomach), soda (sugar + dry ice or a sodastream), syrup (sugar + boil until thick), or just a great way to make your house smell like ginger.