俴

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).

戋 = 一 + 戈 : Mnemonic symbol: a narrow and small floating tank.

戋 = 一 + 戈 : Joan of Arc keeps guard in front of the anthill, her spear at her side. All has been quiet for a long time though, so she just prefers to play her flute all day.