I have a cuckoo araucana who fits the bill. She is scared of all my other chickens and chooses to sleep with the ducks. She is large fowl, but araucanas don't get particularly large.
I would want quite a bit for her though, £30, as she is literally just at point of lay, lays very pretty pale green eggs, and she is a rare colour for that breed (and I wasn't actively looking to sell her). She is a funny little thing and very friendly.