刂
=
丨
+
亅
:
Mnemonic symbol: a kitchen knife. Don Quixote (d) is showing off his special knifes in front of the aorta (ao1). One is made from a dinosaur bone (丨), and the other is made from a crowbar (亅).
非
=
三
+
丿
+
丨
:
Mnemonic symbol: a negative film (photography).
Frankenstein's monster (f) made an effort to photograph the Eiffel Tower (ei1), but now his negative (非) is a big mess. In front of the tower he set up a camera on a Cartesian coordinate system (三) as a tripod, and he attached a banana (丿) and a dinosaur bone (丨) to the camera so that he can finely tune the angles. All was for naught as he now holds the messed up negative in his hands.