"Laying the first stone" is a phrase often used to describe the beginning of a new project, venture or initiative. However, there are a number of synonyms that can be used to convey a similar meaning, such as "planting the seed," "taking the first step," "paving the way," or "commencing the groundwork." Other options include "initiating the process," "launching the project," "beginning the journey," and "starting the ball rolling." Each of these phrases conveys the idea of starting something new, with all the excitement, potential and hard work that implies.