You woke up in a box, unable to move. Confused, you realized that you were in a makeshift enclosure. As you felt yourself being carried and then set down, you heard the unmistakable voice of your aunt, Nakao Hiro, outside the boundaries of your confinement.

"Oh my," you heard her say, "My nephew has sent me a birthday present. I wonder what's inside."

What Object Did You Transform Into?