Signs come in various shapes and sizes. You can use signs to announce a sale at a business, or you can put signs up to display information about an event. Small signs can give details about celebrations. Place a large sign in your yard to let others know of a yard sale or to welcome someone home. Purchase everything you need to make signs when you use coupons found on Giving Assistant. You can also use a promo code to get signs that are already made. These signs can be customized to list the information you want others to know about.