Using sidewalk chalk, make cat paw prints on the driveway or walk way, leading up to the front door. Make cat faces on helium balloons using magic markers. Add on construction paper ears, and a piece of ribbon for a tail. Cut out fish shaped signs that have kitty-related sayings on them, like "Dog free zone", "Do not disturb, cat napping", and "Wipe your paws". Round up all your child's stuffed kitties, and use them as table toppers, or group them together to make a centerpiece. Make fish shaped place cards for the table. Make balls of yarn with Styrofoam balls covered in different colored yarns. Put them in bowls and baskets and set them around the party room as decorations. Using a washable marker, draw a whiskers and a kitty nose on each guest as they arrive.
Serve food in clean, new cat bowls. Personalize each bowl with the guests names using a permanent marker, or paint. Serve kitty food. Tuna sandwiches, goldfish crackers, milk and cheese. Make and serve sugar cookies cut into cat and fish shapes with cookie cutters. Make a cereal snack mix and dub it cat chow. To make a paw print cake, bake a round cake to be the paw, and use four cupcakes as the toes. Place the cupcakes around the top half of the cake. Instead of a cake, bake cupcakes and decorate them to look like cat paws. Use a junior mint in the middle as a paw print, and brown M & Ms as the toes.