My cat Pesto ate a red string, bit by bit. I found it in the litter box in a different form.
Otherwise, she loves anything garlicky, parmesan cheese, pasta, cream cheese and bagel, fish and turkey.
She also licks a lot of things-- maybe for the taste? She licks and licks her new scratching post, but never licked her old one. She also licks the placemats, the freezer, and of course, her mom and dad.