How can you leave a room with two legs and return with six legs?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

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?

It belongs to you, but other people use it more than you do. What is it?

What is so fragile that saying its name breaks it?

What can you catch but never throw?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

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

What is it?

What is at the end of a rainbow?