So far, no one has yet met my Clay Demo challenge: "Abstract".
If I had to do such a clay demo, I would probably do something like this:
Two contrasting scenes, maybe more if the sup didn't think it was clear enough.
One would have these parts:
1. A human body with a thetan perched on top of the head.
2. A usual line/lassoo/loop of clay coming from the thetan, and in the loop would be a small ring labelled "concept". The loop would be labelled "thought" or "loop" if the sup was being anal.
3. Another loop attached indistinctly to both the thetan and body, labelled "mind". If the sup didn't like that I'd use a flat slab labelled "mind" and show the damn sup the reference if he still objected. In the mind would be a small rectangular slab labelled "picture", with either something scratched in the clay or a different-coloured piece of clay to show the item, a large box.
4. On the floor in front of the body would be a large box, looking similar to the picture.
The contrasting scene would be similar, with a concept shown as a small ring labelled "concept", except there would be no picture, and no box.
If the sup was being particularly anal, I would get into more detail, again using different scenes to define it in terms of what abstract is not.