"Beating the drum" is a phrase commonly used to describe promoting or advocating for something. However, there are many other phrases that can be used as synonyms for this expression. Some of these phrases include "pounding the pavement", "touting the benefits", "spreading the word", "promoting vigorously", "proclaiming loudly", "making a pitch", and "harping on about". Each of these phrases can be used in different contexts depending on the message being conveyed. Whether you're trying to advertise a product, persuade someone to take action, or simply raise awareness, using these synonyms can add variety and depth to your language.