Kirby Switch 2 mouse mode grip.  Drop in the joycon 2 and give the mouse some extra ergonomics and style. I glued the feet in on a flat surface with some glue on the back of the feet and back of the top section that is hidden. Eyes fit in fairly secure, however I would glue those in as well. Kirby won't swallow the controller, however I would remove the joycon when not in use just to be safe.