After we sorted out the room a couple of weeks ago I moved the red rods to the back of the puzzle maps due to Ebi-kuns lack of interest in them, and of course, what does he ask to use.... yep, the red rods!
He started with grading them and the made the maze
Then he started doing some of the extensions, it took him a while to figure this one out.
Then he made the zig-zag.
and then he got out the knobless cylinders, this was a major piece of work, and several times he knocked them over, it certainly was a lesson in patience.
and he was very happy when he managed to get the last piece on without it all falling down