According to tradition, the tomte / nisse lives in the houses and barns of the farmstead, and secretly act as their guardian. If treated well, they protect the family and animals from evil and misfortune, and may also aid the chores and farm work. However, they are known to be short tempered, especially when offended. Once insulted, they will usually play tricks, steal items and even mess with livestock. They love porridge with butter.
Every home should have one!