Start trading that is a good option for you to earn 0.1 BTC per week but for that you have to buy some bitcoins I think a few dozens and have to buy and sell at right timing so that you do not miss the good time and do not lose and if you know about altcoin trade and will like to start it then you will not need any high capital to take the start.
However, you could still get that amount by doing alts trading or get btc payment from your job.
That will take a lot of time and your effort to do it, when you are in desperate need of money you have to do things even to sacrifice your personal happiness because you are more focus on your job than having fun.