I saw a discussion of these xmas stars go by my twitter feed some time ago, and had bookmarked the instructions. Last night the spouse and I sat down, turned on some xmas music, and each folded one star. We used origami paper, which is about the right weight to hold the shape but still allow the light to shine through and show off the internal structure. The sun is not cooperating today, but even with the overcast sky you can see the geometric shapes inside. I really enjoyed the process and am hoping we can make a few more over the next week.