Wearecolorblind.com is a website about colorblindness created by Tom van Beveren. Van Beveren discusses good and bad examples of interfaces, charts and diagrams with respect to how they are viewed by color-blind users. He also provides patterns and suggestions for improving their accessibility.
Would be excellent to pass some of the examples through some of the simulators I recommend.
Theresa Neil updated her iPhone 3G stencil set for OmniGraffle at Graffletopia, and posted a few tips and tools that might be helpful to iPhone designers.
http://theresaneil.wordpress.com/2009/09/16/iphone3g-design-resources/
Notepod is an iPhone graph paper sketchbook. The specs:
Three 60 x 110mm, 100pp Notepods printed on both sides. 80gsm laser throughout with a stiff black strawboard back.
Front: 52mm by 77mm of blank space floating in darkness. Endless possibilities in a form reminiscent of a popular smart phone.
Back: A light 6mm grid, perfect for notes or jotting down the phone number of a hot geek.
I'm getting a set, even though I don't typically do iPhone design. Get yours here.