These reusable water bombs are a brilliant make by Coventry based Adele Harris, aka Stitched by Adele. They really are eco-friendly balloons! Just chuck them in water, which they will soak up like a sponge, throw them at your target and repeat! Want to see them in action, see this. Fab. There are two sizes available in eight different colours and the small ones are only £1.50. I shall be investing.