I wanted an anti vibration phone mount for my mountain bike but I couldn't find any designs yet so I remodeled an existing iPhone 5s case into a bicycle mount.
Some (useful) specs:
-The inner diameter of the clamp is 36mm.
-Mounting holes for the clamp are 4mm (actualy 4.2 so the treading can go through easily)
-The anti vibration balls are standard 5mm (Used in quadcopters/drones)
Tip: Wrap some electrical tape around the stem before you attach the clamp to it, this will prevent damage to your bicycle.
Suggestions are always welcome!