筆

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).

竹 = 𠂉 + 丨 + 亅 : Julian Giant Squid (zhu) is weaving a bamboo basket (竹) in the space station's kitchen (Ø2). He is using a key (𠂉), a dinosaur bone (丨) and a crowbar (亅) as basis structure and connects the three stays by weaving soft bamboo (竹) around them.

聿 = 二 + 肀 : Mnemonic symbol: a broad decorator's brush.

Yu the Great (yu) is painting in the space station's bathroom (Ø4). First she paints backgrounds with a decorator's brush (聿), then applies some details using a crayon (肀), and finally she discharges a capacitor (二) on the canvas for special effects.