For a high school graduation party, offer a variety of fun and delicious food options. Consider setting up a build-your-own taco bar, a gourmet burger station, or a DIY pizza station where guests can customize their creations. Don't forget to include vegetarian and vegan options to cater to different dietary preferences. As for drinks, set up a mocktail bar with a range of colorful and refreshing non-alcoholic beverages. You could also create a themed drink menu inspired by the graduate's favorite flavors or colors.