入境簽證

入 = 丿 + ㇏ : Mnemonic symbol: an enter key like on a computer keyboard.

There is a special area in the space station's bathroom (Ø4) which is filled with bananas (丿), but you have to hit an enter key (入) to enter (入). Rachel Rhinoceros (ru) uses a finger (㇏) to press the button and get access to the bananas.

境 = 土 + 竟 : Joan of Arc wants to start her own kingdom and starts with claiming her own territory in the engine's bathroom. She created some walls out of mud but because she has no money to pay, she has a very inexpensive border control consisting of Jacks in their boxes.

签 = ⺮ + 佥 : The Queen of Hearts (qi) and General Fu Qian (佥) reached an agreement in front of the anthill (an1). To finalize it they sign (签) their names in the sand using a bamboo stick (⺮).

证 = 正 + 讠 : James II of England (zh) is not allowed to stay any longer in the engine, so in the bathroom ((e)ng4) he forges a visa (证) so he can stay. On an advertising column (讠) he scribbles his fake visa, but (like me) he sucks at drawing, so he is only able to draw a stick figure (正) where his photo should go.