One of my favorite Slavic folkloric creatures is the Domovoi.
It's kind of the spirit of the house. According to the folklore, every household has a Domovoi. If the owner of the house does not take proper care of his home the Domovoi becomes unhappy and create troubles for the owner (es. breaking stuff, making noise at night). If the owner treats his home well, then the Domovoi will be his friend.
[ame=http://en.wikipedia.org/wiki/Domovoi]Domovoi - Wikipedia, the free encyclopedia[/ame]
The Domovoi can take many forms and shapes, but here are some pictures from Google:
Here is the name variation (from wikipedia)
Belarusian: Дамавiк (damavik)
Bosnian: Domaći
Bulgarian: Стопанин (stopanin)
Croatian: Domaći
Czech: Dědek
Polish: Domowoj, domowik
Russian: Домовой (domovoj)
Serbian: Домаћи (domaći)
Slovene: Domovoj
Slovak: Domovik
Ukrainian: Домовик (domovyk)