One of the details we loved about Lydia Wills' apartment, featured yesterday, are the folding stools hanging on the wall in the foyer. They look great, take up no space and are perfect for a million uses, as extra chairs for a dinner party, side tables, a place to sit and take off your boots...On their own, they are lovely little sculptures. They were designed by Roger Tallon in the late '70's. Lydia described how she stumbled on the stools and what she discovered about Tallon: 'Roger Tallon started out as a product/industrial designer (watches, electronics, typewriters), but his big