These Dangerous Nail Files are designed by Shelley Getzendanner, from the School of the Art Institute of Chicago. We’re always in need of emery boards (we leave them all over: desk drawers, the inside pockets of our handbags, on the fridge). Now we will go round, collect them all and replace them with these much more stylish versions. Dangerous Nail Files, £7.95, The Conran Shop

