Oh, what a beautiful tree! In their excitement, they scurried up the trunk and out along each branch. They were filled with happiness as they climbed amongst the glittering beauty.
Alas! By the time they were through climbing, the tree was completely shrouded in their dusty gray spider web.
When Santa Claus came with the gifts for the children and saw the tree covered with spider webs, he smiled as he saw how happy the spiders were, yet knew how heartbroken the mother would be if she saw the tree covered with the dusty webs.
So he turned to webs into silver and gold. The tree sparked and shimmered and was even more beautiful than before. That's why we have tinsel on our tree and every tree should have a Christmas spider in its branches.