Want to generate a lot of ideas fast? Pick one thing about your subject and change it. That's it!
That's all I did to get these 15 Christmas trees. I used different types of lines to draw the main shape of the tree. I experimented with different shapes, too. In a few of them, I had to change the trunk a bit for it to make sense. But the star stayed the same in all of them.
Changing one thing makes it clear how everything fits together. Visual thinking lets everyone see if that change will leave a big hole or maybe other things to get rid of. That's true for Christmas trees and corporations alike.