One of the most inspiring ideas we found recently in a photo of scuptor and designer Harry Bertoia's living room is not the famous wire mesh chairs he designed for Knoll in the '50's, but this simple hanging shelf. It's made with cord strung through a piece of wood through which holes were bored. It is, essentially, a swing that is meant to convey a sense of air without moving wildly, for it holds a little sculpture - whose, we don't know. In the same image, there appears to be one of…