Hey, how do I download it?
This is a warmer, and there is nothing to download. It's just an idea for your lesson, not a worksheet.
Say that you have a million pounds to give someone (You can show them a few 'pretend' banknotes) and you will give it to the person who persuades you the best. Teach them the sentence structure: 'If you give me a million pounds, I'll ...' and then let the learners take it in turns to try and persuade you. Award the 'cash' to the best or funniest promise.