The phrase "laid the first stone" is often used to describe the beginning of a project or initiative. However, there are various synonyms that could be used in place of this phrase. One such synonym could be "initiated" which means to start something or make it happen. Another alternative could be "pioneered" which refers to being the first to explore or develop something. "Launched" is also a viable option as it suggests setting something in motion. Ultimately, the choice of synonym depends on the context in which it is being used, but these alternatives offer a more varied language choice when describing the commencement of a project.