Even fairies need to wash their clothes, perhaps yours tries to sneak his washing in with yours? This isn’t allowed as shown in the Fairy/Family lease agreement which he signed.
To stop him getting in trouble we have a clothes line set, which is two poles, twine and six little wooden pegs. And in case he has lost some of his clothes there is a spare set of shirt, waistcoat and pants.
The play set is not suitable for children under three as it contains small parts.