I built this Super Hard On Booster a long time ago. I used one of those old DPDT switches without an LED. Later I wanted to add an LED I used R.G. Keen’s Millennium Bypass on a small piece of stripboard and hung it off the LED leads.
Fun fact: Zachary Vex participated in the discussions over at Diystompboxes but was not okay with people talking about his circuits, the SHO was the exception.