Look, they didn't even want money! Just a set of clothes is enough to appease them, this is certainly a great quality that is worth promoting, and it fully demonstrates that I really understand the preferences of these small players.
It was correct to ask Miss Phemys for cloaks and formal wear.
Every high-ranking vampire has at least one wardrobe full of ceremonial costumes like these, as all vampires share a love for luxury.
Even Cui Si, who has been down and out for more than a hundred years, now has several fine outfits that she puts on for formal occasions, and won't even let Murphy hand-wash them for fear of damaging them.
For Miss Phemys, these "fashionable" items are not much effort, but for Murphy, they can serve as the "carrots" to motivate the small players.
However, this kind of small trick can only be played occasionally, as the players are, after all, grounded in reality.