No. 10... The invention must either fulfill a need, simplify a task, or fill a void. If there is not a good market for the product, it will not succeed.
No. 9... Keep it simple. Don't reinvent the entire wheel; rather, modify a small part of it.
No. 8... Concentrate on a particular inventing area; something you are familiar with - such as things around your house, at school, or ideas for toys. Then focus on a more limited area. (In the Low family, Jeanie works on inventions for the bathroom; Elizabeth works on things for the office.)
No. 7... Do the research and testing. Come up with the best product possible.
No. 6... Give the invention a catchy name. The best idea can be unmarketable if the name does not instantly convey what the product does or what it is. Also, the name must be easy to pronounce and remember.
No. 5... Ask for advice from others if there is no invention society in your community.
No. 4... Make the product colorful and durable. If it is brightly packaged, it will catch the buyer's eye. If it breaks right away, people will not buy it.
No. 3... Make a model that demonstrates how your product works. Even a scale model will still give people the idea.
No. 2... Learn all you can about the product's use in society and talk with enthusiasm when describing it.
And our No. 1 Hint (drumroll)... Have fun with your invention.