The posters that boost productivity for me are usually reference ones may not be specific to the field - i.e. http://www.unihedron.com/projects/spectrum/ http:

The posters that boost productivity for me are usually reference ones may not be specific to the field - i.e. http://www.unihedron.com/projects/spectrum/ http://www.unihedron.com/projects/spectrum/ Makes me look at big picture and think of possibilities