Wizard room concept art

What recipe could the wizard be working on here?

concept for 3D

An interior sketch I did as a demonstration for my students.

个人新项目《炼金术士的房间》，去年的新尝试，开始着重练习功能设计。

Hi! This is my lastest project, I worked on it for approximately 100 hours, I still have a lot to learn but I think that I'm becoming a better artist day by day. All was made using Maya except for the trees and columns that were made in Zbrush and then decimated because I didn't have time to do a proper retopology. As always any kind of feedback is greatly appreciated. The original concept was made by Gabe Gonzalez: https://www.artstation.com/artwork/JlR2oa

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Wizard's Room Concept Art