What's the perfect drink for a cat party? Milk, of course! And because you probably won't be serving up a saucer of milk to your human guests, check out these Purr-Fect Party Cups. A great addition to cat party supplies, these paper cups feature adorable felines and are just the right size for a drink of milk or punch. Find more Purr-Fect Party tableware and supplies elsewhere on this website. Paper. (8 pcs. per unit) 3 3/4" 9 oz.