國債

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.

债 = 亻 + 责 : James II of England (zh) had a great party. He wakes up in the airplane's bathroom (ai4) still wearing his party hat (责) to a very angry Rosa Luxemburg (亻) who wants to claim Jame II's debt (债).