Avoid the "build-build-build" trap with this simple canvas to help you and your team follow the "Build-Measure-Learn" principle from Eric Ries's book The Lean Startup. But wait, there's more! The entire canvas is further supported by use of Design Thinking's "How Might We?" question, and the "Feedback Grid".
Use this canvas for every iteration of your work to stay focused on Discovering and Adapting your product, instead of just building everything you can think of.