The Barbican Art Gallery invites visitors to celebrate the spirit of the Bauhaus (the school in Germany that combined crafts and the fine arts) with a day of festivities including family-friendly workshops, a performance lecture (6-7.30pm), a book launch (2-3pm) and a Bauhaus Costume Party (8pm-midnight). Inspired by the puppets Bauhaus Master Paul Klee created for his son Felix, Bauhaus stage expert Melissa Trimingham encourages visitors to make their own hand puppet using found material (12-2pm and 3.30-6pm). Kite-making workshops with specialist Karl Longbottom teach visitors how to build kites and echo the Bauhaus's own kite festivals (12-2pm and 3.30-6pm). Visitors use Le Corbusier's Five Points of Architecture to create their own lego city (12-2pm and 3.30-6pm). And designer Fred Butler, whose clients include Lady Gaga and Björk, leads an accessory making drop-in session (6.30-8.30pm).