Looks similar to this Velo-Orange Dajia Accessory mount: http://store.velo-orange.com/index.p...ess-stems.html If you follow the links on the kick-starter page, the Beam product appears to be available at $25 each: http://www.tinylightbulbs.com/sports-outdoors/beam.html

With some aluminum rod and a metric tap & die set, you could fabricate something similar to the VO mount with greater extension from the handlebars. I'd be concerned about the amount of vibration and dynamic loads if you start hanging 2 lights, a camera, etc. cantilevered out several inches. Might affect handling noticably, too, depending on bike geometry and how much weight is out there. A brace extending below the bar extension might be able to use a large p-clip or hose clamp with a bolt on it to provide a mount point at the bottom of the head tube above the fork and provide enough support.