Ideation Wall - Create together

Check out these sites that will also help you incubate new ideas and make them profitable.

Paper by FiftyThree is great for sketching your ideas and sharing them online.
KickStarter will get the word out and fund your finished project
Behance.net WIP can help you get feedback on your work in progress
FiveSecondTest.com is a great way to get feedback on your design
AppSumo will teach you how to validate your idea and get to your first dollar fast
The Lean Startup teaches you how to eliminate waste from your process
UserTesting.com is the easiest and fastest way to get feedback on your web site
SurveyMonkey.com is a great way to get feedback on your ideas
Poem Generator will help you start a poem
Arduino is a platform for prototyping electronics projects
Kindle Direct Publishing will get your book out there in the marketplace
Threadless will sell and print your graphic tee on-demand
Society6 will sell and print your art on-demand