Answer:
I am a shower that lights up the sky
I am the only word that looks the same when spelled upside down.
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.
What is always coming but never arrives?
I am a celebrity fish.
It rows quickly with four oars but never comes out from under his own roof. What is it?