My personal favorite book of Seth's is 'Purple Cow.' The book speaks about the importance of creating remarkable things and about being truly unique. There really is no reason to create products which are alike.
When I recently emailed with Seth, he said he had a tin right near desk and that he loved it. I was so excited as he truly is a great thinker in terms of wonderful products -- it was an honor to know sweetriot was already in his home. Are there other 'thinkers' you follow and respect? I'd like to know.