I saw David Lynch made a wooden holder for his iPhone. It is made for filming and attaching to a tripod (see YouTube video below). I had a similar idea for my Google phone.  When I am working in the yard and using my bluetooth headphones I tend to set the phone on a rock.  I used to use this piece of webbing I had to hang it from a tree branch but it was too complicated. Inspired by Mr Lynch I made a similar phone holder, with a more pastoral use.