@WAI finally got around to Watching these video Clips in my Quest VR headset.
They were fun to make. The bouncing space hoppers, I was really pleased with, in 2D they are of course just orange circles but the conversion software has interpreted them correctly as spheres .
The carousel has a floor made entirely of quads changing colour at random intervals. I stopped using it after upgrading to 4K but it will work fine on a good PC with 3K cards.
The giants scene was an experiment in perspective but I wanted to get a better background before release - and then forgot all about it.
..and although you've seen the porthole one before I think it has the best 3D effect on the model.