If you have Christmas candy left over, save it for the next holiday! There are a lot of things you can do with candy canes, for instance. Face them toward each other, tie a pretty ribbon around the hooks and make a heart from them. Give them to your valentine.Or crush them and serve them over ice cream any time.
Chocolate candy can be melted down and reformed to suit the occasion. Got chocolate Santas? Make chocolate something else with it. Melt it down, add some peanuts and let it harden again. Or use candy molds or anything to shape it into something else.
Hard candy will keep indefinitely if kept in a more or less cool place that's dry. Just save it until next Christmas and you will save yourself some money.