Some venues are also perfect for certain types of charity events. If your organization promotes science-based education for underprivileged kids, for example, then a venue like London’s Earth Halls is perfect, since it’s practically a science museum. Social media is the best place to promote your charity while keeping costs to a minimum. In the weeks leading up to the event, create an event hashtag and use it in all of your posts and encourage attendees to do the same.