怠工

怠 = 台 + 心 : Don Quixote (d) got a job working at the counter (台) in the airplane's bathroom (ai4), but he is very lazy and slacking off (怠) because he left his heart (心) at home.

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.