What is it?
It's a (mobile) phone.
What are they?
They're glasses.
What are they?
They're credit cards.
What is it?
It's an ID card.
What is it?
It's a wallet.
What is it?
It's an umbrella.
What are they?
They're books.
What are they?
They're pencils.
What are they?
They're watches.
What is it?
It's a laptop.