Sure, when tinkerer Caleb Kraft found out that pressure switches marketed at the disabled were massively overpriced, he got mad like anybody else. But then he decided to get even the best way he knew how: by building his own, and posting the plans for all to follow on Hack a Day for free. The project came about via a kid with muscular dystrophy named Thomas, who enjoyed Minecraft but may eventually lose the ability to hold a controller or use a mouse and keyboard. Caleb's idea was to build low-pressure switches using a 3D printer and simply map them to the Minecraft keyboard and mouse commands using a $20 Teensy board. He posted his plans online, but since he feels they could be improved on, also created a site called the Controller Project (see the More Coverage link). From there, those in need of a custom device can make a request, other modders can post their own plans and builders can use them to make controllers for donation. Since more is always merrier for such things, if you have those skills or know someone who needs them, hit the source for more info.