Design notebook: the best Windsor chairs Light-bulb moment The shades of PET lamps are made from polyethylene terephthalate (PET) plastic bottles recycled and woven by Colombian artisans. Designed by Madrid-based Alvaro Catalán de Ocón, they result from a project on waste and the Amazon. Available individually from £180 or in sets of three, six, 12 and 21 from the Conran Shop (0844-848 4000). Profound pencils The School of Life - a feel-good, live-well cultural enterprise - has launched a stationery range. The Keyword pencil sets feature significant words from the worlds of literature, art and psychoanalysis. Sharp, modern design to inspire and delight. Sets of six pencils cost £12 from the Southbank Centre Shop. Five of the best: Windsor chairs Melbury Windsor armchair by Dave Green for Sitting Firm, £599, John Lewis; Ercol Windsor chair (1946), £325, Utility; Straight chair by George Nakashima for Knoll (1946), £948, Twentytwentyone; Comeback chair in plastic by Patricia Urquiola for Kartell, £392, Heal's; Linea oak Sydney chair, £329, House of Fraser.