Pocket Money from Arduino Projects

Hello!I m a 17 years old student and i want to make things with arduino but i dont have enough money to buy boards so i want to find a way to make money for the materials i want. (I dont care for profit). I want to ask you if you can suggest me any good way to make just enough money from arduino projects to buy parts for the next project. Thank you in advance!

There are second hand stores that sell electronic toys for cheap, you can dissect these for motors/servos switches etc.

It sounds intersting. I ll check it out! Thanks a lot!