I designed what I call a iTheater around the iPhone 5. This is hands free holder with speakers that is fully adjustable for size and optimal vision distance. I have borrow the modeled head from Sonu (thank You Sonu).
I was browsing the internet and noticed that people are talking about this design. Here are some of the links.
http://www.psfk.com/2012/10/iphone-mini-theater-headset.html
http://www.bitrebels.com/technology/iphone-theater-headset-concept/
http://www.trendhunter.com/trends/iphone-theater