Answer:
I start with an E end with an E and have a letter in me.
What gets bigger the more you take away?
I am one small little piece of paper yet sometimes hold lots of value. I am all you need to get in to big events but will cost you. I am an important part of travel. And if lost you're not coming.
I am full of holes but still hold water. What am I?
You throw me away, I find my way back. Traditionally, I'm wooden with an arch in my back. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.