豎筆

竖 = 収 + 立 : In the space station's bathroom (Ø4) Sheldon Shrimp (shu) is experimenting with different ways of putting a radio (収) on top of a vase (立) in order to use the vase as resonating body to improve the sound quality. In the end he decides that the best way to put the radio is to set it up vertically (竖).

笔 = ⺮ + 毛 : Brunhilde (bi) decided to try art for a change and constructs a brush (笔) in the space station (Ø3). She cuts off her long hair (毛) and attaches it to a bamboo stick (⺮) to make her brush (笔).