足跡

足 = 龰 + 口 : Mnemonic symbol: a football. Zapatista Zebra (zu) wants to pimp his football (足) in the space station's kitchen (Ø2). He thinks that a few more vitamins wouldn't hurt, so he extracts the vitamins from a mandarin (口) with a syringe (龰) to inject them into his football.

迹 = 亦 + 辶 : Joan of Arc (ji) is caring for the also-ran (亦) after she finished a marathon in the space station's bathroom (Ø4). The also-ran was wearing gladiator sandals (辶) but already after half of the race they were worn through, and Joan of Arc can see the footprints (迹) the also-ran left with her bare feet when she came in.