Use cookie cutters to form candles. Make them out of honeycomb wax sheets or use them to top a cake!
Give fudge to friends and neighbors using cookie cutters as molds!
Tie old cookie cutters together with twine to make a garland.
Last but not least, you can use cookie cutters to make a wreath! Stick to one shape (like stars) to create a simple wreath, use a multitude of shapes and spray paint the wreath to be one uniform color, or leave the cookie cutters as is and add a fancy bow... like the green and red bow or the picnic pattern bow pictured above.