不興

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.

兴 = 小 + 一 + 八 : I would say this one looks definitely like a hedgehog, but since there's already a character for hedgehog, let's call this one a sea star.

兴 = 小 + 一 + 八 : Marie Curie found a sea star attached to a big eight ball in the engine's bathroom. As she is a curious and interested scientist, she wants to investigate the sea star, so she pokes it with a flute and tries to tickle it with a daisy.