What's the relation between these clues?

Question

Find the relation between these words a.k.a. clues in the sentences below:

1. Zombies prefer to stay beside elevators.
2. Evil country produces thousands of money.
3. I was eating fast food in that vehicle.
4. Just bought the pen refill with a low price.
5. He spent some pocket money in that carpet store.
6. Solving some math questions in the subway station.
7. Include some books with over a thousand pages.
8. Japanese weapon hanging on the wall.
9. Several of them are from our uncles.

Hint: they are cryptic clues