PENS!

My cat is obsessed with pens, highlighters, markers, sharpies, pencils and even crayons. She loves to bat at them, try to bite them and chew on them. She usually ends up batting them away from herself and under the couch or inside the couch, it's really cute to watch her do it though. Don't ever actually let your cat bite the actual ink part of any of the aforementioned, or the graphite or crayon parts, because that can't be good for your cat.

She's adorable.