Creative pause is perhaps the simplest creativity tool. Instead of jumping to a response immediately you deliberately pause your thinking for few seconds or a minute. The purpose of this pause is to break the default functionality of our brain to jump to a conclusion immediately.
During this pause you let the inputs fully register with you. You may also do basic APC (alternatives, possibilities and choices) but it is not necessary. The very act of creative pause will help you to land on a new idea instead of getting trapped in our usual way of thinking.
I must point out that though creative pause looks easy but it is not. You require a lot of discipline to break the habit of jumping to a conclusion immediately and pause for few seconds before doing so.