The easiest movies to make are the ones where you don't have to go very far to shoot. When looking for inspiration, look around you...literally "look around you". There is something right now, that could be used in your movie. Build your script or outline around things that are easily accessible to you. For example, if you want to shoot an action movie, but don't have access to any guns, you can go out and buy some plastic ones (or Airsoft, they look real enough to pass on camera), but ask yourself a question, "Do my characters have to use guns?"
Get creative, think outside the box and you can come up with a great story that will really blow people away and look like you spent a fortune. That's call "production value" and the more production value that you can squeeze out of every frame in your movie the better it will be received by your audience.
Go to "The Maverick Store" and see our props, including Air Soft Guns.
Check out "Scriptwriting- Basic" for more on scriptwriting.