Switch to unlined paper for all of your meetings, brainstorming sessions, and notebook idea entries. It will subconsciously - and consciously - free you to think differently and more expansively. Also, it facilitates more visual drawing of ideas - not just linear verbal descriptions - which is particularly useful for novel, emergent ideas that are still in the process of forming. Once people experience unlined, they don't go back :-) [about 16 years ago]
100 Tips For Improving Your Creativity