What to do during the summer?

So i'm in 7th grade and one of my best friends (let's call him T) is in 9th grade and the summer is coming really soon and me and T want to hangout during the summer and next school year since we won't see each other at school anymore because he is going to high school. Well my parents don't really know him and it would be weird for me and him to just hangout at one of our houses and my parents probably wouldn't allow me to hangout with a boy by myself. Where can me and him hangout and go where it wouldn't be weird and my parents would probably approve?