What is at the end of a rainbow?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

What has 88 keys?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?