A friend of mine, Martin Bell, is going to do a crazy thing for charity to help raise money for Sense Scotland right after Developer Day Scotland. Sense Scotland is a charity that works with children and adults who have communication support needs because of deaf-blindness, sensory impairment, learning and physical disabilities. It is an excellent cause and the money will be put to very good use.
If you want to sponsor him then you can go to his sponsorship page and donate what ever you feel is appropriate. If you are a UK tax payer then you can also "gift aid" it where the Government will gift the tax to the charity too.