屢禁不絕

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.

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.

绝 = 纟 + 色 : Just inside the elevator's kitchen Zeus and the silk worm are playing a dice game. The game is called "annihilation", and the loser is said to become extinct within 1000 years' time. They don't know yet that both gods and worms will be extinct due to the human race soon.