We went to a drive through holiday light show, and the kids received paper glasses with filtered lenses. They didn’t work very well with the outside lights, just made everything have a blurry halo, but for the inside lights on our tree, they made each point a snowflake! We had a fun couple of minutes playing with the snowflake filter. I’m not really sure how old fashioned these are; I really expected them to be the rainbow type I had as a kid. It seems that the snowflake refraction pattern would actually take some sophisticated laser work on the film. Eh. It was a nice distraction.