The Legend of the Christmas Spider is an Eastern European folktale which explains one possible origin of tinsel on Christmas trees. It is most prevalent in Western Ukraine, where small ornaments in the shape of a spider are traditionally a part of the Christmas decorations.

Tinsel is a type of decorative material that mimics the effect of ice, consisting of thin strips of sparkling material attached to a thread. When in long narrow strips not attached to thread, it is called "lametta", and emulates icicles. It was originally a metallic garland for Christmas decoration. The modern production of tinsel typically involves plastic, and is used particularly to decorate Christmas trees. It may be hung from ceilings or wrapped around statues, lampposts, and so on. Modern tinsel was invented in Nuremberg, Germany, in 1610, and was originally made of shredded silver.