So I’ve come up with a version that anyone can build for about $400. It uses a number of off-the-shelf components, including the dock itself and an easy-to-assemble tube-amp kit for the heart of ...

DIY web site Instructables details how to build a simple gadget dock for the low price (less than a dollar) of a large binder clip and a small rubber band. In a nutshell, you just pinch the plug ...