(It's an ornate box, carved from metal and gemstones.)

(It's not padlocked, but it looks like it's locked from the inside.)

Player: Shake the box.

(The lid rattles as if it's unlocked from the inside.)

(It looks like the box will open with a little force.)

Player: Open the box.

(The inside of the lid reads, "Congratulations on your success in Step 3!")

(The contents of the box seem to be a reward for success.)

(You removed the contents and closed the box.)