Answer:
I contain five little items of an everyday sort. You can find all five in a tennis court.
I run cold and hot, I look blue but am red. What am I?
I can be written, I can be spoken, I can be exposed, I can be broken. What am I?
I have an eye, but I can't see. I usually have to work with something in my eye. What am I?
Without me everyone would lose their head. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.