David Robinson, co-founder of Sporeboys, a mushroom street-food kitchen which tours food markets in London and events across the UK, came up with the idea of illustrating childrens books with fungi images. Using the fungi to create meticulously assembled luminograms, Penny Bun Helps Save the World, a tale of a group of mushrooms and their attempt to save their forest home, is illustrated with images created by arranging mushroom sculptures on the plate of an enlarger on photographic paper, and exposing them to different light intensities. Each exposure produces a one of a kind print, shaped by the interplay of light and the natural colour and texture of the mushrooms.