Take a Steam Controller and this thing I've made to stick to it, and hey, it's a Steam Controller with a thing sticking to it Image credit: Rock Paper Shotgun The Steam Controller's now out in the wild, and it's so nice, we've written some impressions of it twice . If just having the thing in your hands (assuming you grabbed one in time ) isn't enough for you, you'll probably be glad to know that Valve have shared the CAD files for it, meaning techies who fancy modding or designing accessories for it can get cracking. "Today we're making the CAD files for the external shell (surface topology) of Steam Controller and Puck available for download under a Creative Commons license," Valve wrote in a quick announcement post .…