A Tomte is a figure from Swedish folklore and children's books, a gnome who takes care of the cattle when the farmer and farmer's wife are away from the farm. Unlike a troll, he is a good-natured dwarf.
Lotte van Lieshout has given them a pointed head and depicted them next to a mouse or rat to indicate how small they are.
This female Tomte carries a pointy hat she just took off.