Touch the zeitgeist with a carbon neutral pitch. Leave the iPad at the office. Ditch the fancy overproduced leave behind too. Get some pre-printed or hand crafted A1 flip-chart  paper bullet pointed or with diagrammatic illustrations of your key points. Leave them behind to talk for you. For added authenticity walk to their offices or use public transport to get there. Go green, get mean, get on the street and walk towards the money.