'Flux Smile Machine', George Maciunas, ca 1970
'Fluxkit', compiled by George Maciunas with contributions from Watts, Shiomi, Brecht, Knowles, etc., ca 1965
'Optimistic Boxes', Robert Filliou, 1968-81
'Flux Atlas', Robert Watts, 1973 (24 compartments containing pebbles, carefully labelled, from around the world)
