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.
但
=
亻
+
旦
:
Rosa Luxemburg and Don Quixote meet each other in the early morning in the anthill's bathroom, but they both only started their morning coffee (which is in their mugs) and are not in the mood to talk yet.