When it comes to operating in the black, many self-storage operators think about cost-cutting measures rather than adding new profit centers. This is for good reason. Instituting a new service or product takes time, staff training, the right market and, usually, capital. However, if you find the right profit center, the new revenue can offset slower rental months, bring in new customers and set your facility apart in a competitive market. Following are 10 great money-makers used frequently in conjunction with self-storage facilities.