The organisations below do great work. If you can spare a dollar or two, please do.
For every $5 donated, Two Good delivers a restaurant quality meal to a woman living in a domestic violence safe house. They employ women from the safe houses to make the meals and in doing so, rebuild their financial independence.
Your money will be used to buy long-lasting insecticidal nets, which have been proven to prevent malaria and save lives. When you donate, you can track where in the world the nets will be distributed.
The Against Malaria Foundation is GiveWell's top rated charity, so you can be sure that your money is being used effectively.
More information here.