free time between subjects

Hi, i have a big trouble with my time between my class subject, because i honestly can not find some activity to do in my free time which is a lot. I World like to do something funny and interesting but most important something to help me to grow up as a person, because i World feel very bad if i wasted my time.Please if somebody has an idea and can help me i will be glad to read your advise. ¿what can i do with my free time?

Carolina