How do I get into the attic?

Hint 1 of 6:

Try the obvious first.

Hint 2 of 6:

Press the button near the attic door.

Hint 3 of 6:

Well, that was the wrong trap door, but it will still help you open the right
door.  Wait until you're back at the attic door before reading on.

Hint 4 of 6:

You need some way of reaching the hook on the door.

Hint 5 of 6:

Another hook-shaped item might help here.