Pet projects are personal ventures that individuals pursue in their free time or as side hustles. Synonyms for pet projects include hobbies, pursuits, pastimes, avocations, interests, undertakings, and endeavors. These terms emphasize the personal investment, passion, and enthusiasm behind such projects. Hobbies, pursuits, and pastimes typically refer to enjoyable activities that people engage in for pleasure or relaxation, while avocations and interests suggest a deeper commitment and dedication to a particular field or subject. Undertakings and endeavors have a broader scope and can encompass any type of project or initiative, whether personal or professional. Regardless of the term used, pet projects reflect people's individuality, creativity, and desire to pursue their dreams and interests.