The featherweight plastic sacks that have now largely replaced paper bags don’t seem to be quite as much fun for cats, but, whether paper or plastic, bags that make some kind of rustling or crackling noise do hold some fascination. (Aside from the sound, bags are fun places to hide in.) For owners who want to keep their pet supplied with a noisy sack at all times, there is the Krinkle Sack, a machine-washable item that provides the right sound and lasts much longer than the usual throwaway store sack.
