I enjoyed the t-shirt culture of student groups at Stanford during my time there in the early 2000s. One of my favorite t-shirt designs was this one for the Society of Physics Students.
At the time it took me forever to clip the Feynman diagram path so that the
S could be placed inside the loop. We must have splurged on this design since the print included three colors.
If I were to do this again, I would have replaced the
S with a tree. Perhaps the Stanford Tree.