俑

亻 = 丿 + 丨 : Mnemonic symbol: Rosa Luxemburg. She's quite radical, and her name starts with "r", just like "ren2". Also, 亻appears at the left-hand side of characters, and Rosa is a leftist as well.

Robinson Crusoe (r) and Rosa Luxemburg (亻) are having their favorite snacks in the encampment's kitchen: Rosa is eating a banana (丿) and Robinson is eating a dinosaur bone (丨).

甬 = 又 + 用 : Mnemonic symbol: The path screened by walls to both sides could be the grave of Marquis Yi of Zeng. In his grave, a massive set of 64 bianzhong bells was found, of which 45 were 甬钟 bells. Thus, I'm going to represent 甬 by one of these yongzhong bells.

甬 = 又 + 用 : Inside of the engine, Yu the Great wanted to learn how to box. She made the right choice to wear boxing gloves, but as she had no punchbag she used a 甬钟. Like a boss she entered the ring through a path screened by walls on both sides. Unfortunately after her first punch she already had to use the first aid kit, because the bell was way too hard.