what should I do these 6 months

Hi iam pranay a second year mechanical engineering student. I was detained by my college due to lack of attendance (52%) minimum is 75 Now I got 6 months to spare What should I do these 6 months like any skill I can learn or try to explore

I like building cars (rc ) Editing etc but in career point of view I need some suggestions Cause i really am a dum @ss when it comes to selecting somthing