At Make it Matter, we specialise in helping businesses think differently about their issues, opportunities, brands, products and services, as well as internal and external communications. In doing so we use a number of formal tools to help explore, critique and unlock new thinking.
If you want to think differently, but don't have a budget to get us involved, here are few free tools that might help. Note: we will be adding more tools as time permits.
Catalyst is a creative thinking tool (PDF) that uses random images to help stimulate new thinking in a brainstorm.