Neither I nor my wife have ever really role-played in Norwegian or played translated RPGs, so it was hard to think of an alternative. I just don't think påskeegg really captures it. My cousin-in-law's sons would probably know the word, haha :P

Not 100% sure about skattekiste, but maybe we do need a break from the underlying English basis. e.g. "Skattekiste funnet!" @lefnire If you were to use less of a game-slang-y word for "drops" what would you call them?