壇

坛 = 云 + 土 : Tecumseh (t) set up an altar (坛) made of clay (土) in the anthill's kitchen (an2) to be used as a forum (坛). He prepared his entrance very well: before stepping out to the crowd he dispenses clouds (云) from an earthen jar (坛) so that it appears that he is stepping out of nowhere.

亶 = 亠 + 回 + 旦 : Mnemonic symbol: to bow and show how earnest you mean it.

Don Quixote (d) ordered a beer at the bar in the anthill (an3). The barkeeper questions whether or not Don Quixote will return (回) the mug (旦) after he finishes his beer, so Don Quixote bows and shows how sincere (亶) he is by handing over his beret (亠) as security deposit.

土 = 十 + 一 : Tommy Turtle (tu) wants to fix a cross (十) on a flute (一) in the space station's living room (Ø3). He uses dust and clay (土) to hold them together.