If you're having headaches looking for the BIG idea, maybe you should try a different approach for your sketches. Designer Heli Hietala makes colored crayons in the shape of the human bodies all for the sake of art. They are fun, come in an array of different colours and may give you the boost to go artsy!
Implications - Products like this are fun and creative, and appeal to consumers who want products with a touch of whimsicality. Most importantly, however, they are a great example of how great ideas don't have to involve drastically reinventing the wheel. Even a simple twist on a familiar product is enough to lead to a unique new product, and that is an important lesson for any company.