不相上下

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.

相 = 木 + 目 : Mnemonic symbol: I take "eye" and "tree" as resembling an ent, an alive tree. Xi Shi (xi) portrays (相) an ent (相) in the anglepod's bathroom (ang4). Unfortunately she's really bad at painting, and her portrait resembles more a Christmas tree (木). The Eye of Providence (目) enters and, just from the shape of the Christmas Tree, instantly recognizes its own portrait (相).

上 = 丨 + 二 : Sherlock Holmes (sh) investigates a mysterious murder in the anglepod's bathroom (ang4). Somebody has been killed while using the golden squat toilet. He finds a mysterious apparatus on top (上) of it, and breaks it open using a dinosaur bone (丨). As the apparatus breaks, he finds the murderer's weapon: The dinosaur bone is sticking in a capacitor (二), which has been hooked up to the golden squat toilet to kill the victim using the lethal electric charge.

上 = 一 + 丄 : Mnemonic symbol: as in the movie "Up", someone will be using lots of balloons to send something on a long journey. Sherlock Holmes (sh) prepares to take off in the anglepod's bathroom (ang4). He fixed a lot of balloons (上) to a flute (一), on which he plans to sit during his journey. At this moment the flute is only held back by the 90 degree corner clamp (丄) which is fixing it to the ground.

下 = 一 + 卜 : Mnemonic symbol: from the up/down logic, and a little bit the shape of the character, a ladder.

Xi Shi (xi) is on a retreat in the ashram. Using a voodoo staff (卜), she divined that next (下) week she'll have to play the flute (一) sixteen hours per day. Because she hates playing the flute, she climbs over the ashram's bathroom (a4) wall using a ladder (下) to escape.