Plenty of Ukrainian Christmas trees feature ornaments in the form of spider webs. This comes not just from the tradition of spiders bringing could luck, but more specifically from an old western Ukrainian folk tale. It seems a family too poor to decorate their tree woke up on Christmas morning to find it covered with cobwebs. Then when they opened the windows, the sun´s rays turned the webs into gold and silver. Yuletide wonder restored and bye-bye poverty! Now if there were only some magic that could make these invading Russians disappear.
Read more in my post A Quirky Christmas tp All! 10 of the World´s Weirdest Yuletide Traditions.