Which item is inappropriate to include in a portfolio?

Including pictures of your vacation in a portfolio is inappropriate because a portfolio is a curated collection that showcases your skills, achievements, and professional experiences relevant to your career or field of study. The primary purpose of a portfolio is to demonstrate your competencies and provide evidence of your work and accomplishments to potential employers or educational institutions.

Photos of a project and letters of recommendation are both relevant items that contribute to illustrating your qualifications. Project photos serve as visual proof of your work and abilities, while letters of recommendation provide external validation of your skills and character from credible sources. Therefore, including personal vacation photos does not align with the professional focus of a portfolio and detracts from its purpose of presenting your professional identity.