Easiest way to have a lot of ideas
The easiest way to have a lot of ideas, is to stop for a moment when you face a problem or an inconvenience, and think about how it could be solved.
We all have this habit as a child, but we forget this as we grow up. Slowly we tend to take all our problems as "the way of life" and we never try to think about how it could be solved.
I am trying to develop this habit again and I hope you do it too.