Hot New Products
Keep an eye open for hot new products on the market. A good example of this is when the bread machine was introduced. After that, there was the bread machine cookbook. Other new product examples include the birth of the personal computer, video game systems, digital cameras, etc. As we go further and further into the future you can count on more inventions coming out. Keep on top of new and popular products on the market and perhaps there will be a demand for a book on it.