These are the yarn soaked in glue and wrapped around a balloon. We made three but only one made it to the hardened stage. We wrapped the string around a water balloon and two of them popped as the glue was drying, I don't think those balloons are as thick as regular as their main purpose is to break. If we made these again we would use string or embroidery thread instead of yarn. The spiders are rings that clipped right on.
It is hanging from our dining room light this is our view of the sac.