We have just come by an interesting little tool from our friends at Autodesk - and it's free!
Project Cooper - Is a snappy, simple, hassle-free sketching software that lets you create polished drawings, layouts, and plans that you can share—faster than ever. (So the brochure tells us)! See the cool motion graphics stuff Autodesk put into the marketing video!
You should pop along and download it and please let us know what you think!
Happy Simple, Hassle-Free 2D Drawing!