Notice how often you unknowingly asking yourself: "It would be nice if ...". Sometimes it happen that you are missing something, and not just do not have a lot of money would give for the fact that it had been.
Well, for example, you're going to a business meeting. Dress accordingly and decide to clean up before leaving the special shoes with a sponge. And then begin to catch yourself thinking, what would you like RIGHT NOW.
First of all, very much like to not bend to those already wearing the shoes.
Secondly, it is not pleasant when the plastic body sponge touches the surface of the shoe and leave it scratches.
Next, figure out what the buyer is likely to choose a sponge, the land of the body which is inserted gum or trite rounded edges. Maybe not immediately, but having tried once, will buy your sponge. Also, that would not bend, you can, for example, to make oblique attachment of the chrome-plated metal or plastic for easy dressing and taking off shoes. Ibid provide a shelf for most of these sponges, and small accessories. Here I cite only examples, and it does not mean that you should rush to produce sponge for shoes)
During the day, listen to their "It would be nice if ...". You can count a lot of things that we lack. I think all this stuff and money will not bring? Well, well! Inventors umbrellas and flexible plastic straws for the shakes did not think so and have made millions on this.
Remember also the sticky paper for notes, disposable bags for tea, chopsticks for cleaning ears, and many other useful products.
So many little things around us, which made their creators rich. And all these little things were born thanks to a simple thought, "It would be nice if ...".
Good luck and useful new ideas!