The craziest things you can plug into your iPhone's audio jack | Engadget
This Moto Z USB-C headphone adapter could be what iPhone 7 users have to look forward to - CNET
With smartphones being integrated with so many things into a small form factor, why has no one added a laser pointer? - Quora
9 Ways to Transmit Audio With a Laser Pen - wikiHow
iPhone Laser Pointer
XC5412 Laser Pointer for iPhone Presenter Plug in App, : Amazon.com.au: Electronics
Amazon.com: Targus Wireless Presenter Laser Pointer for Professional Presentation with Simple Control, Bluetooth Connection (AMP16US-52) : Everything Else