You have probably heard of Lucia; the Queen of Light who brightens the dark morning of December 13 in Sweden.
In short the tradition consists of a procession ( ett luciatåg) with a Lucia up front, followed by handmaidens (tärnor), star boys (stjärngossar), brownies and elves (pepparkaksgubbar och tomtenissar). All but the brownies and elves wear white gowns. Lucia wears a light crown/wreath whereas the handmaidens each carry a candle. Lights can be battery operated; more likely the younger the children in the procession.
There is beautiful singing. Either it really is, or you are a parent. These Lucia processions can be enjoyed at every preschool and school, and sometimes even at workplaces. Most towns have an official procession visiting hospitals and elderly, malls and libraries. There is also a national broadcast. You can find the Lucia concert broadcast on SVT. Search for Luciamorgon.
Want to know more? Watch Lucia for Dummies.