Tangled hair, when you pull it through your fingers and it resists in lumps. That those fine strands create tangles, spontaneously? It reminds me of quantum entanglement. Is there a finer depiction of tangled locks in the world? There is only one image of a black hole in the world (so far).
Two objects sitting on slippery wet earth, very much of this world. Genuine French ochre to be exact.