In the past, "few resources for sketching websites on paper with ease" was shared at WRD.

Here is a new one -Responsive Sketchsheets- that fulfills the need of sketching responsive website layouts by ZURB.

Responsive Sketchsheets

The download pack includes a single PDF file with multiple scenarios: "only mobile", "mobile and desktop", "tablet (with orientation)".

Also, another package is provided which includes the standard sketchsheets by the same company.

WebResourcesDepot Feed