Alfonso Bozzelli design a very simple, but effective wireframe-template. This template can also be used for sketchboarding. The template is minimal and can be used for communicating with your clients.
Is there more than this?
No, actually not. No information about templating, sketching or wireframing. The author is a freelance Web / iOS Designer & Developer. He has kindly shared his templates and that’s it!
you can also check out his website, but not much on this aswell.