I can think of plenty of designers whose works I’ve never even seen, or those I’ve only seen from afar, either raised on some plinth or sheltered under a vitrine. I’ve had the lucky opportunity, though, to not only see but experience the work of London designer Martino Gamper: walking under his colorful Chair Arch in the courtyard of London’s V&A museum, or digging my feet into the hand-knotted wool Houseplan Carpet he designed for Nilufar gallery in 2009. It’s especially nice to experience a designer like Gamper’s work in person because there’s always the possibility that the piece you’re seeing is the only one of its kind that will ever exist. Gamper has always maintained that he prefers to create either pieces for unlimited production, like his lopsided Arnold Circus stool, or one-offs — with no middle ground between the two. Most of the work on view at Gamper’s new exhibition, “Tu Casa, Mi Casa” at Glasgow’s Modern Institute, falls into the latter category. The majority of the 69 designs created for the exhibition are wholly unique: