This shelf holds relics of a past project, an exhibition Deddens and Mukai curated under their other moniker, the Workshop for Potential Design. Put on during London Design Week last year, it invited Peter Marigold, Max Lamb, Gemma Holt, Hiroko Shiratori, and Paul Elliman to contribute “Objects With a Void”; the geometric metal sculpture with the removable triangular core was Lamb’s. For the 2011 fair, they’ll present a second group show of objects that imitate other objects: “Methods of Imitation.”