天旱

天 = 一 + 大 : Mnemonic symbol: an angel from heaven. Mother Teresa (ti) programmed a robot (大) to play a flute duet together with her in front of the anthill (an1). As they play their flutes (一) an angel (mnemonic symbol for 天) hears their heavenly tune and descends from heaven (天) to listen to them.

旱 = 日 + 干 : Mnemonic symbol: a marmot, 旱獭 (han4 ta3).

Hamlet (h) used the drought (旱) to dry fruits (干) under the sun (日) in the anthill's bathroom (an4), but the marmot (旱) secretly stole and ate all the dried fruits.

旱 = 日 + 干 : This character provides a mnemonic on its own: the sun (日) dries out (干) the land, leading to a drought (旱).