Build a bigger one that is very easy to push or tap and it could be a great aide for the disabled!!
My step-daughter has a condition called Rett Syndrome. Her hands don't work well, but she is able to bump into things and move around some. This kind of button could allow her to control the lights, play her favorite playlist, or even call for help (she can't speak). Others, with no use of their hands, but a service dog, could also benefit. And I imagine if you got it classified properly, it could be marketed and sold as a medical aide/device which would make it something that could be covered by insurance or other programs.