Silly string is instant chaos in a can, a favourite for kids' parties, football wins and the end-of-term free-for-all. One press sends a long streamer of coloured string flying, and a handful of cans keeps a garden full of children busy for ages. Hand them out with party poppers and streamers and a few noisemakers from the wider party accessories range for a proper party. Use it outdoors or somewhere easy to wipe down, as it can mark walls and fabric if it dries on.
