Belt trick/plate trick
Vertical slices left to right correspond to the plate trick:
The `hand' at the top rotates twice about the vertical axis
while the `shoulder' at the bottom remains fixed.
Horizontal slices top to bottom correspond to the belt trick:
The twice twisted `belt' at the top is deformed to the
untwisted belt at the bottom without moving the ends.
The `orientation entanglement' demonstration from
Misner-Thorne-Wheeler's section on spinors corresponds
to duplicating the picture by reflection in the final vertical slice.
(Thanks, Dad, for imagining you'd seen this, and for everything else!)