重活儿

重 = 千 + 里 : Chantal Chicken set a new world record in the engine's kitchen. She repeatedly rode a space elevator up and down, one thousand times in total. For setting the world record she got a sunflower.

重 = 千 + 里 : This one looks like a space elevator. The two top strokes are the heavens, the two bottom strokes are the earth and the part in between is the space elevator.

重 = 千 + 里 : Julian Giant Squid installed a space elevator in the engine's bathroom, and now he wants to find out how heavy the load can be. For his first trip he loads 1000 times 1 kilo, and to celebrate the grand opening, he brought a sunflower.

活 = 氵 + 舌 : Helga Horse joined the traditional water bottle challenge and empties a bottle of water over herself in the observatory's kitchen. To raise the difficulty level, she only uses her tongue to hold the bottle.

儿 = 丿 + 乚 : Mnemonic symbol: "son" (儿) sounds similar to "Sun" like in "Sun Wu Kong", so it's gonna be represented by the monkey king. Albert Einstein (Ø-) and Sun Wu Kong (儿) are fighting in the space station's kitchen (-Ø2). Their weapons: Albert Einstein has a shovel (乚), and Sun Wu Kong has a banana (丿).