I think the thing would be my pen because I use my pen in my daily life to write and complete my notes. my pen is used by me a lot in school and even at home. pen is an important thing for me with out it I think my day would be nil. my pen would help me to write all the exams and all other things like my notes in my class work. so, my pen plays a crucial role in my life to do all the works. the pen would be used a lot in my life and even in every other student. the pen would be an thing without it cannot do any thing.
hope so my answer is useful.............^_^ !!!