The expression "can't get enough of something" is a way to express an intense attraction or desire towards something. However, there are many alternative phrases which can be used to convey a similar meaning. These include "obsessed with," "addicted to," "in love with," "enthralled by," "captivated by," "mesmerized by," and "infatuated with." Each of these synonyms adds a unique take on the subject, such as the strong sense of addiction often associated with being "obsessed with" something or the idea of being "mesmerized by" an object that is particularly enrapturing. All of these expressions can be used to describe a powerful reaction to something and can be employed in everyday conversation or written communication.