INVENTORY! You need to have THINGS! If you are selling a product, stock up now! Make as many as you can hold; make at least two of everything. If people want something and you don’t have it as soon as you open, they may not come back again to check for it despite e-mails, text reminders, and the like. If you are selling a service, print off some coupons today. Have them on hand to either give your customers directly when performing the service or sent in an e-mail after. If you have a physical storefront, get a display stand and place your coupons somewhere folks can see it. They may try you out if they “get a good deal” the first time.