Answer:
I have two eyes in the front and a lot of eyes on my tail
I am rarely touched but often held and if you are smart you'll use me well.
I am often sold by children entrepreneurs in summer time
If you have me, you want to share me. Once you share me, you won't have me. What am I?
I like to twirl my body but keep my head up high. After I go in everything becomes tight
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.