So, how do they get in your house?
Via the fairy doors. I bought my lovely little cousin one from Enchanted Doorways and they're gorgeous. She also had an accessories set. That set was also lovely.
This is how big it is, in comparison to my hand. This door opens, which was a very big hit with my cousin.
And, this was not taken by me, but by the birthday girl. She'd stuck the post box to the door, and there's a window somewhere that glows in the dark (to see when the fairy is home!). And she was playing with the fairy dust. It showered off of me.