來 = 从 + 木 : Mnemonic symbol: mailwoman. Sir Lancelot (l) is visiting the mailwoman (來) in the airplane's kitchen (ai2). As a gift, he brought a Christmas tree (木) decorated with rubber chicken (从).

来 = 丷 + 未 : Mnemonic symbol: mailwoman. Lancelot (l) is super happy that his inflatable crocodile (丷) and live size Ai Weiwei (未) puppet finally arrived (来). The mailwoman (来) delivered them straight to the kitchen of the airplane (ai2).

呀 = 口 + 牙 : Maud Younger (y) has an aching wisdom tooth. She attached a string to it and stands on top of the ashram (a5). At the other end of the string she attached a mandarin (口). When she throws the mandarin down the lighthouse, the string will pull out her aching wisdom tooth. It will hurt a little, so Maud is sure to say "哎呀" when the tooth is pulled.