The little black item with the white cap is a buttonholer. You can see the templates (gray) in the box that make different size button holes. I have one with my 201 and the other 1 with the red cap is with my machine also and had different zigzag sizes as illustrated on the top of the cams. You got a nice haul there. I would replace all the wiring with new and not from extension cords either. My hubby has redone the wiring on some of my machines.