Idea sketch & Prototype 3

The key will be decorated with colorful collages, and the box will be as simple as possible. No matter how blunt the box looks, if the key is locked, we'll naturally think "Oh, is there something great inside this box?" Anyway, viewers can't check what's inside the box. (I'm actually going to keep the box empty or fill in things that what we think is generally useless, such as toilet paper or rubbish.) The reason to decorate the key with colorful collages is that, this key is literally the key point to make us imagine what it's like to be inside. Collages express our imagination.