The hammer

Use the hammer? On what? The area that seems to indicate it is the place to 'whack' does nothing at all. I've tried the wall, the chair, the items in the chair, the floor under the chair, the table beside the chair, the shelf above the chaif, even the pillow in the chair. What am I missing?

Use it on the piggy bank on the left side of the screen.

I saw the bank but it did not register, I guess. Anyway, thanks for the heads up. Worked just fine.