after realising that i was possibly looking at 30 different cubes that are needed in order to represent the time scale (technically it should be 37 but i prefer to finish at 30 in order to be realistic as to what i can get made in time for deadline).
therefore ideally the cubes will be made from:
wire, sponge, copper sheet, pipe cleaners, tracing paper, solid ceramic, knitted, brick, aluminium, perspex, resin, quilted, glass sheet, plaster, straws, wax, glass slump, crochet, bent rod, handmade paper, ceramic tile, leather, bamboo, mount card, willow, silk, solid walnut, acetate, twigs, cardboard