There are many different type of outdoor lights that can be used at Christmas time. The first basic kind is miniature lights. They can come in any color but the most popular kind is clear. The other type is the bigger, C9, lights.
These lights come on strands of many kinds. The first is your basic strand of lights. The next kind would be the swag lights. They are the newest design to come out. The most popular kind is the icicle lights. They hang off of the roof and look like icicles. There also netlights, which are just lights in the shape of a net so it is easier to decorate bushes. A projector has also been made to project a holiday greeting onto the house.
The lights also can be shaped into many figures. Here are some examples: