弱不禁風

弱 = 冫 + 弓 : Rachel Rhinoceros (ru) created a piece of art in the observatory's bathroom (o4). She joined many composite bows (弓) by sticking their ends into popsicles (冫) which weren frozen again afterwards. Her whole construction is a huge armchair, but it is very fragile and weak (弱), so Rachel puts on it many of these "handle with care" stickers.

不 = 丆 + 卜 : Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.

禁 = 林 + 示 : There's a small forest of two Christmas trees (林) in front of the encampment ((e)n4). Although there's a sign clearly stating that it is forbidden (示) to touch the trees, Joan of Arc (ji) set up her guideon (示) so that it is supported by the two trees and she can practice pull ups.

风 = 乂 + 几 : Frankenstein's Monster has to wait in front of the engine. Because the wind is blowing, he uses pliers to disassemble a small table and builds a shelter with the parts.