Snowflake streamers. Not as cool as this, but the homely variety. I only made two because I ran out of patience very soon (predictably enough). They look good at night with the tree lit up next to them. You just snip up the design after folding the paper into a square (or smaller), then you take needle and white thread and string ’em up. The good thing is you only need to tape them to the glass at one point. Don’t forget to flatten them or iron them with cloth on top though. I put a huge stone mortar and pestle on mine overnight, after laying them flat between two layers of table mat. For a real pro look at snowflakes, check this out.