The rec center (adult learning center) from the spongebob episode "Artist Unknown". The barrel looks a little chunky, but I didn't have any round pieces left.
About this creation
The inside. There are: Squidward, Spongebob, a blackboard, the art book and the marble.
Some other things: an easel, a chisel, a hammer, a brush (yes, it is made of a broken lightsaber) and a palette.
Spongebob is carving the marble.
The marble opens, and you can see that it turned into rubble, but the critic likes it!
A picture of Spongebob painting. This wasn't in the episode, but I made it.