螺絲

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.

丝 = 幺 + 一 : Socrates locked himself out of the space station! To call the other astronauts for help, he attaches some silk cloth to a flute and waves it like a flag.