自告奋勇

自 = 丶 + 目 : Mnemonic symbol: a hand mirror, which someone uses to look at themselves.

The Eye of Providence (目) is looking at itself (自) in a handheld mirror (自) in the space station's bathroom (Ø4). It think it's indeed looking very good, since Zorro (z) attached a petal (丶) to its eye (目).

告 = ⺧ + 口 : Guy Fawkes is informing the golden calf that it is not allowed to eat mandarins any more in the aorta's bathroom by pointing at a big LED screen stating so.

告 = ⺧ + 口 : Mnemonic symbol: one of these LED panels with public announcements which scroll horizontally over the panel.

奋 = 大 + 田 : Frankensteins Monster (f) and the robot (大) are exerting themselves (奋) by working on a field (田) in the encampment's bathroom ((e)n4).

勇 = 力 + 甬 : Yu the Great (yu) has to show her courage (勇) inside of the engine ((e)ng3). While standing next to a yongzhong bell (甬) she'll push its power button (力) for a dare.