Firstly, don't loose your focus on your studies because isn't as easy as it seems.
Secondly, there are dozens of ways
You can try teaching kids! Being an mentor is a noble thing.
You can try your hand on subway or dominos too.
Can teach someone instruments too.
Can earn by working your own campus too (as intern).
You can Also work in Freelancing
1. Creating medical PowerPoint presentations.
2. Creating 3D medical animations or illustrations
3. Designing a medical logo
4. Designing a medical/health care website
5. Medical voice narration