Alright, one last holiday hack before we finish out the year. Every Christmas Eve [ryan rose]‘s family has a contest with a new theme. The challenge this year was to construct a Christmas wreath. Ryan decided to make a Simon Christmas wreath. He cut up a string of lights to produce the four separate color regions. He triggered the lights using an opti-isolator circuit and built buttons that look like presents. You can view his construction photos at Flickr and watch a video of it in action at YouTube.