The phrase "pack up" refers to the act of gathering and storing belongings in preparation for departure. However, there are many synonymous phrases that can be used in place of "pack up." Some options include "gather your things," "collect your stuff," "assemble your belongings," and "prepare to leave." Other related phrases include "load up" or "get ready to hit the road." Whether you are preparing to leave home, finish a camping trip, or depart from a vacation destination, using one of these synonyms can help you adjust your language to fit the situation.