Sandy mention in Guardian article on Peel...

"But it was listening to Sheila talking about John that made the book come to life right there in the kitchen - sometimes literally so. She was telling me about a plastic mouse that John always had dangling from his belt loop, and which had been made for him by Sandy Denny of Fairport Convention. "Hang on," she said suddenly, "I know where it is." She fished it out of a drawer and unzipped it. Inside was a miniature pair of pyjamas. I didn't ask why. There's very little that can seem strange in a house where a gargoyle greets you on the garden path, and a training shoe is nailed to the ceiling in John's room."

Peel used to talk about these in his intros & outros when intro'ing Fairport in the Heyday era on Top Gear....

http://www.guardian.co.uk/arts/johnpeel/story/0,15271,1591022,00.html#article_continue