Random Ideas
Use random ideas to stimulate your thinking. Pick a random word out of the dictionary. How does it relate to your current idea? Flip through a magazine and pick a random article. Does this article interest you? Is there an aspect to this article that you could apply to your current idea? Walk down the street and find the first object that is yellow. Does this have any significance to your idea?
You might say to yourself there is no way a yellow sign has significance to your idea, but try to make a connection anyway. Purchase a deck of creativity cards called the Creative Whack Pack by Roger Von Oech. With it you can pick a card at random and try to make a connection to how it relates to your current idea you are working on. Try to come up with random pieces of information and force yourself to make a connection to that and your current problem.