I grew up with snowy winters and I believed for some reason that in winter the "Little People" needed shelter. Consequently, I would make little hollows along the snowbanks for them to get out of the cold. Occasionally I would make more elaborate ones.
It never occurred to me to check to see if they had been used, or where the "Little People" stayed in summer. In fact, I don't recall ever thinking about them at all if there wasn't snow on the ground.
A childhood belief about fairies

others believed things like this
- When I was 5 years old, I used to believe Poland was snowy and cold all year round, like the North Pole. — Sara
- I used to believe that at the beach town where we spent the summer, they took the sidewalks in for the winter.— Missy
- I used to think if you caught a cold during summer, it was called a "hot".— Brandon Campbell
- I used to believe that snow on the ground was clouds that were too tired to fly.— alex
- When I was a kid I thought tasers make people too sleepy to do anythingAnon
- when my friend was little, she used to eat paper, thinking it would make her read better.— hehehe