Imagine coming up with a cool idea, being able to design that idea on a computer, hitting print and seeing your idea come to life, ready to use. For three longtime friends, two of whom are quads, the idea was custom disability-related aids for daily living. For a father and son team of engineers, it was novel switch technology that allows people with limited dexterity to use touchscreens. In both cases, thanks to 3D printing, the teams were able to bring their visions to life without breaking the bank. And they can now pass the savings onto consumers.