Yes, you can make a box individually!
AwesomeBox is still one of the most thoughtful gifts you can give and receive, even if only created by one person.
For example, a woman made an AwesomeBox for her sister with photos from all the places in the world they've travelled together with captions on the back. A couple made a first-year baby journal for their parents. We have seen individuals create AwesomeBoxes with nearly a hundred cards in one day!