I made my own kanban board in a separate scene in Godot to track my progress during the month. I used containers and buttons enough to show tasks and their current state. I think it was very useful.

All graphics are made with vector shapes inside Godot. I used Line2d with variable thickness and gradient filling for almost all animating objects like diver, shark, dolphin, turtle, ray fish and schools of fish. Also used colorRect and Panel with customStyle for other objects of the game.

At the time of writing this post 80% of level1 is done. 

I should complete the level and create treasures map now.