make some crafts and sell them
(examples) paper shurikens1$, paper clip bow/arrow/quivercombo 3$, paper kuni knives3$, or maybe paper guns withbullets and a clip5$.
Step 1: Sell
now sell these at garage sales, at school, set up a stand, or at a park. my suggestions are on the other page but you can choose your prices.
Step 2: Money
now by the end of the time your done selling within a month you should get up two 100$ if you keep selling.