Post internship depression

My internship finished on Friday and I find myself excruciatingly bored.... Ive already recovered my sleep debt and every Netflix show I watch hits a dead end. (business of drugs, Designated Survivor, even gossip girl) I hang out with friends almost every night, but during the day I'm totally alone since their internships are still going. (I started a 12 week internship early).. My team genuinely became so really great company, and our chats were pop-ing- now that is going on without me since I lost server access. My internship was engaging, fun, and intense- now I have literally nothing. I work out, eat, and just do nothing productive or enjoyable. I genuinely feel awful. I performed very well during my internship, and could probably get it back if I wanted to, but I feel as if that is just awkward to ask for it for 2 weeks- particularly since Im going for a return offer.

How are people passing the time? And what would you do in my shoes.. I already have done all LBO/M&A modeling courses known to man and doing them would just be repetitive. Any new hobbies I should pick up.