吉
=
口
+
士
:
Mnemonic symbol: "Giga" apparently stems from a Greek word for "giant", so I'll represent 吉 by a giant.
The giant (吉) just entered the space station's kitchen (Ø2) and is very hungry. In each hand he holds Joan of Arc (ji) and the bachelor (士) captive and robs them for their mandarins (口) which he longs for.
Petra Penguin is really angry at the sun for heating up earth's poles. In the space station she tries to kill the sun with a combine harvester, but the sun defends itself by flinging Sputnik replicas at Petra.
赛
=
宀
+
井
+
丌
+
贝
:
Socrates (s) and the crab (贝) are competing in a competition (赛) in the airplane's bathroom (ai4). The competition is about stacking wells (井) as high as possible. After time's up, Socrates is the clear winner. He climbs the winner's pedestal (丌) and receives a honorary PhD and thus a graduation cap (宀).
人
=
丿
+
㇏
:
Mnemonic symbol: Neanderthal Man (人). Robinson Crusoe (r-) is looking for snacks in the encampment's kitchen (-en2) when he suddenly spots Neanderthal Man (人). Neanderthal Man offers him a banana (丿), but Robinson Crusoe doesn't trust the present and pokes it with a finger (㇏).