Where do new ideas come from?

Everyone has some ideas in their head. But ideas aren't just from our head. They are from others. I think new ideas come from our environment. I always got my new ideas from my stuffs on desk or somewhere in my house. When I look at something, like some kind of patterns, I mix the pattern with other patterns that I saw it before. Also, I got ideas from my friends and family. My mom is the one who gives the most ideas to me. But I always mix my mom's ideas with my ideas. My family give me a lot of ideas when I ask them. Ideas that you have might be yours but I think most of the ideas are from our environments.