Answer:
Wind and cord combine, buzzing in the box. In all this we find, though to some the use is lost. What am I?
I can be in your body but never on your placemat. I'm always better when I'm fresh, but you'll never see me in the flesh. What am I?
I may seem real but it always turns out I was never there in the first place... you only see me during a certain resting stage.
I'm white and I'm used for cutting and grinding. When I'm damaged people usually remove me. What am I?
I can wave my hands at you but I never say goodbye. You are always cool when with me even more so when I am high!
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.