Hanging Smartphone Holder

My wife likes to listen to podcasts in bed, she also often falls asleep and then her smartphone is somewhere in bed. With this holder, she can now prevent this when she puts the smartphone in the holder on the edge of the bed after starting a prodcast.

My bed edge is 35mm wide. With the FreeCAD file, the width can be easily adjusted. 
 

I printed the one on the photos with Prusament PLA Blend Viva La Bronze.