寻
=
寸
+
彐
:
Mnemonic symbol: a dowsing rod 寻水术. Not to be confused with 丫!
Xu Xian (xu) built a new dowsing rod (寻) which he tests just inside the Erechtheion's entrance ((e)n2). He prepared a huge pig snout (彐) of which he filled one nostril with water and one with wine. To his satisfaction, the dowsing rod reacts only to the wine, so he thumbs up (寸) satisfied. He'll go and search (寻) more wine with it immediately.
寸
=
一
+
亅
+
丶
:
Kitty Cat is playing with a petal leaf in the encampment's bathroom. She's keeping it in the air by hitting it with a flute and a crowbar. It's so much fun that she thinks to herself "thumbs up".
工
=
二
+
丨
:
Mnemonic symbol: a steel beam, since 工 looks like the cross section of a steel beam.
Gitta Giraffe (gu) is working a shift in front of the engine ((e)ng1). Her job is to melt dinosaur bones (丨) so that they can be disposed off easily. To melt the bones, she is shorting a huge capacitor (二) with a steel beam (工) which consequently heats up to a bright glow. Using the glowing hot steel beam she can melt the dinosaur bone easily.
Mnemonic symbol: the character 彐 looks a bit like a pig snout seen from the side. If you need to type it, remember its pronunciation ji4 by imagining Joan of Arc wearing a fake pig snout in the space station's bathroom and making grunting and squealing sounds.