Standing on a soapbox and giving an impassioned speech is a time-honoured tradition dating back to the 19th century. It's a popular way to attract attention and express one's views on a particular issue. However, if you're tired of the phrase "gat on a soapbox", and want to mix things up, there are a variety of synonyms you can use. For example, you could say someone is "mounted on a platform" or "standing on a pedestal." Other options include "preaching," "ranting," or "holding forth." Whatever your preference, these phrases all convey a sense of someone speaking forcefully and persuasively on a topic they feel strongly about.