An original idea is an idea that nobody else has ever thought of before. Often people think they have an original idea, but someone else usually has already thought of it. Sometimes other people may have thought about your idea before, but they never bothered to document it, and therefore your idea is probably just as good as an original idea. It costs a lot of money to patent an original idea, so unless it's a highly profitable, you could just share it with everybody here.

Sometimes I feel that with so many people on the planet, I just can't come up with an original idea anymore becuase statistically someone else will probably have already beat me to it (and they have).

Here's a possible example: When your boss asks you for documentation, give it to him or her in paper airplane form.