answer:Playing board games such as Taboo and Cranium are always great fun with friends! It requires some money to buy the game, but after the initial investment, you can use it forever. Other game recommendations are Scene It (for whatever your favorite movie/tv show is), Guitar Hero, anything with the Wii etc (the latter two being much more expensive of course). Take a class with friends together. It can remind you and help you relive fun times in college. The class can be anything from aerobics to learning some kind of martial arts or learning a new language. Learning is always easier when done with friends, it will be a constructive yet fun way of spending summer. And can you ever really know enough languages or just know too much in general? Make everyone chip in for groceries and try to make meals from different ethnic cultures. Exploring different cuisines is always great fun for the mind and the stomach. Cooking with friends means more mess but lots more memories! This way, you get to explore a whole new culture (maybe have a theme for that day…for example if you are cooking Indian food one day, watch a Bollywood movie with your meal!) and the food will probably be a lot more authentic than the restaurants (get the recipe an indian site, keeping with the above example). Those are just some ideas. I will try to come up with more later.