Origami
It started with a paper crane he brought with him to her lessons. Small and white, but crafted with a steady hand.
It reminds her of the birds he spoke of, during that one lesson. The ones she wanted so badly to see when she got to Earth.
Majestic, flying creatures that took to the skies and could fly free, liberated across the skies - oh, how she wanted to see them with him. Be free, just for a moment, and imagine themselves as the birds.
But now, he acknowledges, with the Versians ruining the environment, the birds fly no more.