1)
I come in a box with my brother,
We know not our father or mother;
Together we most useful are,
Bur useless when one is without the other.
2)
My head and tail both equal are,
My middle slender as can be;
Whether I stand on head or heel,
It matters not to me.
But if my head should cut off,
The result is passing strange;
What's left of me
Is now to nothing changed.
Answers:
1. Shoes
2. The number 8