Awesome idea for used wine bottles.Use bottles, soda bottles, beer bottles, or wine bottles. Cover a part of a bottle in red paper. Spray paint everything else white and cover the red with stripes of white, and turn it into letters.
Santa's Key: this is great for houses with no chimneys. Buy a large key ornament and decorate a board. Hang it outside the door Christmas Eve, and when Santa touches the key, the lock magically changes to fit so he can come in and leave the presents.