Necessity is the mother of invention, and your idea could be the next best thing to sliced bread. Whether it’s a gadget or finely tuned instrument, you should get your ideas on paper as sketches or make models. You can also look for competing products, or products that do similar things. Using other products to show what yours might look like is a good thing too. The more information you have for a product design engineer, the better they will understand you. This helps you get what you want faster, and at less cost.