Soma always had his notebook with him.
Aside from science and the supernatural, he was quite interested in the beauty around him. The trees, oceans, galaxies, everything. It didn't matter what it was, there was some beauty in it and he was fascinated by it. Whenever he was able to, he'd draw and color it. If he had a digital device with him, and he wasn't in a dangerous situation or doing something important, he'd quickly draw it down for later. If Soma couldn't right away, he'd repeat it in his mind over and over again until he could.
His siblings could all testify to that statement.
The only times that he would stop drawing was either something else that needed his attention, which happened a lot considering he was one of the two people who needed to keep peace among the siblings, or if he had to eat. That didn't even stop him as sometimes he brought the notebook with him to the table and used his tail to eat while his hands were on the page. It only worked twice while the other times resulted in him being told to put it down.
Sometimes a few of the others watched him draw, other times they let him be. Peridot sometimes joined him whether it was just sitting by him as she drew or they worked on something together. Soma didn't mind it, in a way they were spending time together, even if he didn't originally plan it. It was pleasant actually, unless they fought with each other, in which case he'd have to stop not only to break up the fight but because he wouldn't be able to draw with that going on.
Soma tried to not let it take over his life with his duties and responsibilities. He had things to do as well and besides, he was the responsible brother alongside Marino, he couldn't just do whatever he wanted all the time. Even if it was merely a third of his time being awake, he couldn't allow himself to do so.
Despite that, he kept the notebook with him whenever it was possible.
