I would suggest big ideas don’t come from you working hard doing your job. You may randomly, in a moment of pause, think of a better way to do your job — but that is rare. Often, the shower produces more new ideas because it’s the first place you’ve allowed your mind to share its observations and ideas. Now that we are on call all the time, it is more important to find silence and peaceful moments. Create an environment that will give you the opportunity to be mindful and just think.
Here is an interesting article about how some of the best idea people set up their environments.