Advice Needed What's the best way to earn $300 a month?

Hello to all of you reading this!

I'm moving in a new country for my studies, and am looking for the best way to earn some money to pay the rent.
Ideally, I'd need $300-400 a month (living in the European Union).

What could you suggest to get this money, white or greyhat? It is roughly $10 a day.

Thanks!