If you are looking for short film ideas, you might want to consider making a short horror film. My buddy sent me the one below called The Last Dive by Jason Eisener (Hobo With A Shotgun). This short was part of the 3:07AM project, aimed to help promote The Conjuring.
I thought Jason Eisener did a great job of creating and keeping the tension. And while I sort of knew something bad was going to happen – I couldn't take my eyes off of it.
httpv://youtu.be/JV0pNU9htnw
If you want to get into short horror filmmaking, all you really need is a camera and an uber spooky idea. As you can see from this example, you don't need much dialog or lighting. But what you do need is a strong point of view and the ability to engage your audience in a short amount of time.
What is your favorite Short Horror movie?