Tool Backpack Can A Backpack, Headphones, Binder, And A Phone Be A TOOL In Daily Life?

Can a backpack, headphones, binder, and a phone be a TOOL in daily life? - tool backpack

I have a test in a while, and I have to write 3 or more tools that are used in everyday life. So I have four suggestions to appear ... Can I? Please help! Thank you:)