Some cats simply enjoy playing in and around plastic bags because, well, it's fun. The crinkly noise those bags make a sound similar to prey scuttling through grass and leaves - which could be part of the reason some cats find it so enticing. Cats are innate hunters who need mental stimulation. If you notice your cat is attracted to the sound of a crinkling bag, find them crinkly cat toys that imitate this sound to encourage them to play with the toy instead. Plastic bags are potential choking and suffocation hazards, even for cats. Crinkly cat toys are often filled with catnip, too, making it extra fun!