濕巾

湿 = 显 + 氵 : Sherlock Holmes (sh) is investigating a wet (湿) puddle next to an empty water bottle (氵) in front of the space station (Ø1). Although it is very obvious what happened through the conspicuous (显) empty water bottle, Sherlock still has to think hard about it.

巾 = 丨 + 冂 : Joan of Arc has smuggled a dinosaur bone out of the encampment. To hide it, she covered it in maps and towels.