Felt is not expensive, but if I can avoid the cost and use of additional materials I will. Once the felt is peeled back I can see the yellow touch wire (connects the touch switch to the lamp body) does not have a great connection and might short out. This is not an electrical hazard since this cord is supposed to be touched to turn the lamp on/off, but a bad connection could cause a failed response.
lock washer and use a steel nut to secure it to the threaded lamp rod. This rod runs the length of the lamp and connects all the metal parts to the switch. Perfect so any part of the lamp will activate the touch switch.