Hello Violette !
Thanks for your enthusiasm :)
We've been thinking about doing an artbook for a while, but it's a lot of work if you want to do it right. It's not in our list of priorities right now, but it's something we might consider doing at some point, in the future. Meanwhile, if you're interested in our work in its physical form, we have a couple of art prints available on Society 6 ;) : https://society6.com/novabox