magazine layouts....for lots of text. I like the idea of having a sort of reference book for inspiration about layouts.
This free download from @medialoot is ideal for quickly wireframing your mobile app ideas. Included are 12 screens with plenty of UI elements and components across them. Each component can be arranged or customised to suit your needs. And if you prefer to sketch on paper, these elements are a great way of converting your ideas into smart, presentable designs.