In addition to physical repairs, it can also metaphorically represent the 'tools' or 'resources' for problem-solving. For example, you can use it when all preparations for a project are complete.

This emoji is a symbol of 'preparedness' and 'problem-solving ability.' It's used in fun ways, such as comparing a game character with diverse skills to a 'versatile toolbox' or representing the advice needed to solve emotional problems, like in relationship counseling.