During my childhood, my mother used to borrow utensils or gowns to the
fairies whenever there was in need. You could not see them but there
was a place where you could place your request and get it afterward.
They also ordered soft drinks with money on top the big stones at the
foot of the mountain near the river along the road. Letters and
deliveries of their orders were put at the same place. They were very
generous that time but people abused their generosity. They stopped
lending anymore.

However until now, they are just there and manifest physically to
somebody they want to.