Teamwork and Leadership
There are very few jobs today that don't require the ability to work with others. Even technical or computer experts often work in teams. Students can develop teamwork and leadership skills through clubs, activities and work. More and more academic courses require group projects and the experience of working with others is as valuable as the course content learned. Working with others who are a different race, sex, religion, age etc. is an outcome increasingly being sought by recruiters. It's not unusual to see questions in an interview designed to probe a student's experiences in these key areas.
Recruiters also probe for such skills as problem solving, quantitative, and scientific as well as maturity, judgment, and self direction. Depending on the job these can be more important than the major.