"Become all the rage" is a popular phrase used to describe something that has suddenly become very popular or trendy. However, there are many synonyms that can be used interchangeably to express this idea. Some of the most common include "hit it big," "go viral," "catch on," "take the world by storm," and "sweep the nation." Other possibilities include "ignite a craze," "cause a sensation," "spur a trend," or "spark a frenzy." The use of any of these phrases can effectively convey the idea of something or someone capturing the attention and interest of a wide audience.