I have ideas all the time. A few good ones and a swarm of bad ones. Filtering them down is sometimes tough.

I believe you should work on the one you feel the most passionate about. Ideas do not need to be great to succeed. But, unless you have a fantastic game changer of an idea, you need to work hard and passionately to get it off the ground. The more you are vested in the project emotionally the more likely you are to always push through.

Hate cats but have a great idea for a new cat toy? Screw it. Love dogs but have an iffy idea for a new product (doggles anyone?)? Go for it.

As Edison said, "Genius is one percent inspiration, ninety-nine percent perspiration." Pick the project you are most willing to perspire over.