19. Change your cell phone plan: If you value money in your pocket over buying a new fancy phone, look into cell phone providers that offer rock-bottom rates. FreedomPop offers basic voice and data service for free. The catch with these services is you often have to buy a phone outright or bring your own. So maybe you don’t want to sell your old phone quite yet. You can find a prepaid cell phone plan for $30 a month or less as well.