Here's my DIY Sony Xperia ZR Dock!
The design is "double fault tolerant" if that's the correct wording. As you can see from the closeup, there are 2 springy levers for each charging contact; they are made from paperclips. One is the shape of an L with a hairpin loop to contact the phone. The other is an L which is slightly bent away from the surface to not touch the first L; this one is connected to the USB power wire. When the phone is docked, it will deflect the first L into the second L, thus completing the circuit!
I was going to glue some more popsicle sticks to the back (maybe with weight) to enable it to stand in portrait an landscape mode. But I just put this under my monitor and it fits perfectly there and happens to lean a little forwards too cuz of the base!