Cant remember who makes 'em, but there is a box that can use any device, (no special anchors) and you can just push the device screw in. They have a spring metal clip in the hole that allows the screw to just be pushed back across the threads. They work well.... And nothing too specialized, so that you're stuck using specific devices. Wouldn't mind seeing those on metal rings! (Especially for the ones that didn't make it through the threading proccess before I installed it.)
As for the wall-plates, I can see a big problem with how these are set up. On uneven surfaces, where some fine adjustment will be nessesary to make the plate look like it it is even, (know what I mean?)you would have to pry the plate off several times in order to do it. Where as other screwless plates you can make those adjustments before the final plate goes on. Nice idea though....
