霓虹国

虹 = 工 + 虫 : Helga Horse (hu) wants to decorate engine's entrance ((e)ng2) by putting a rainbow (虹) over it. Before she can install the rainbow she first has to set up a steel beam (工) as support though. Fortunately there is a very strong mosquito (虫) who helps her to set up the beam above the entrance.

国 = 囗 + 玉 : Mnemonic symbol: a nation's flag. Let's say the Chinese flag.

In the observatory's kitchen (o2) Gitta Giraffe (gu) is practising her ballet performance. She got a whole crate (囗) full of jade bracelets (玉) and flags (国) and fixed one flag to each jade bracelet. This makes a perfect combination for throwing the ring with the flag waving behind it and catching the ring again after a few pirouettes.