The best way to attach Christmas lights to your house is to use a combination of clips, screws, and/or anchors. Start by wrapping the lights around the house in a zig-zag pattern, and then secure each end to a wall or roof. You can also use clips to attach the lights to the gutters or shingles, or screws to secure the lights to the side of the house. Finally, if you have any areas that are hard to reach, you can use anchors to secure the lights in place. This will help ensure that the lights stay up and look beautiful all season long!