螺纹

螺 = 累 + 虫 : Lenny Lemur (lu) is trying to catch a mosquito (虫) in the observatory's kitchen (o2). To this end he attached a conch (螺) to the end of a rope (累) and throws the conch at the mosquito, hoping to catch it inside. After a miss he can just retract the conch with the rope.

纹 = 文 + 纟 : Willy Walrus (w) wants to continue reading his favorite book (文) in the encampment's kitchen ((e)n2), but he finds that a silk worm (纟) left a lot of traces (纹) where it ate through the book.