光信号

光 = 小 + 兀 : Mnemonic symbol: a laser pointer.

光 = 小 + 兀 : Gitta Giraffe is giving a big concert in front of the anglepod. She set up a lot of laser pointers for the light show, the audience is throwing daisies up to her and she is just rocking her 胡兀尔.

信 = 亻 + 言 : Marie Curie and Rosa Luxemburg are reading a letter of Karl Marx to the public in the encampment's bathroom. To make the message really come across to the people they use a megaphone.

号 = 丂 + 口 : Hamlet accidentally locked himself into the aorta's bathroom, together with a mandarin which he is extremely allergic against. His only rescue is the emergency breathing mask attached to the wall which he puts on immediately. There is also a trumpet to call for help with a bugle call, but Hamlet has to wear the breathing mask, so he can't give the bugle call in a normal way. Instead, he has to give the bugle call with his butt.