IT department
IT department, if IT is a computer major, can choose it department, which can not only challenge itself, but also expand its knowledge. Is a very good choice.
Frisbee department
This is a very good leisure club. If you have this hobby, you can choose this club. There are many frisbee lovers here, who can not only relax themselves but also strengthen their physical exercise.
suggestion
The above two are just my personal suggestions. There are many clubs of your choice. It's best to choose one that suits you better according to your hobbies and specialties. What others recommend may not be suitable for you.