I believed that fairies lived in lamp posts - their front doors were the little holes where the key fits.
A childhood belief about fairies

others believed things like this
- when i was little i believed that leprecauns put the holes in crumpets.Anon
- i believed that the holes in swiss cheese were cow farts.— lily
- We had an antique lamp that I thought was hideous and for years I thought "Art Deco" was a synonym for ugly.Anon
- i used to believe that butterflies are fairies that crossed the rainbow— sillyme
- I used to believe that the dust on top of doors was poisonous.— draconid
- When I was a sprog, I used to think that Rainbows were painted in the sky by magic fairies— Jojo