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.

错 = 昔 + 钅 : Kitty Cat just finished polishing her golden harpoon in the observatory's bathroom, but afterwards she made the terrible mistake of dropping her milkshake on it. Now she'll have to polish it all over again.