How can I make money really quickly?

I'm a student, my family is extremely poor and at the end of the term, I was living off savings from where I worked previously. I'm so poor, my family have no money but they're everything and I need to get them Christmas presents, especially for my two year old sister. I feel so stressed not having any money for the next 3 weeks. I would ask my real dad for money but he abused me and I don't want him abusing me again because him giving me money will mean he comes back in my life.