Baby grand piano! And a flute and a hang and on his own lap a violin.

"Thank you! In exchange for the gifts which you have given us, I offer you the debts of my human, holding back only enough that she'll remain entangled with us, and with the understanding that you can request I transfer those to you as well at some future date."

"She needs to stay entangled to - not slow down, is the idea?"

"Yes."

"Okay. I accept? Do I need to do something specific to accept?"

"No. Three-way trades are complicated and people need to hold and refer to identifying crystals but two-way it just needs to be clear you agree."

"There are crystals involved? Wow."

"You kind of need a lot of crystals to have a tolerable court. Next to the need to patrol your borders it's one of the biggest barriers to people starting new ones."

"For three way debt and slow-cooking meat and what else?"

"Slowing people down, if they want to do magic or have children, and lighting, which is particularly important at night."

"Why do you need to patrol your borders?"

"It is otherwise easy for people to trespass and incur debt without you noticing."

"Humans? Or do other faeries do that?"

"Other faeries do it rarely but that's because people patrol. Humans aren't much of a concern for us, we don't have a faery ring."

"What would the faery motive be? They're entangled too after they do that, right?"

"Our court has good fortune. Being entangled with us is beneficial. Or if you wanted to change that, a good way to start would be getting someone to run up debt we didn't know about, and then forcing them into mistakes or misconduct."

"And this isn't prohibitively difficult to get someone trapped into?"

"You could use a human. Or do it with ten people and not force any of them to do anything actually likely to kill them, though the logistics for that would be very nearly insurmountable."

"Ah-huh. Anybody use traps instead of patrols?"

"That'd almost certainly be disproportionate. Maybe someone somewhere has designed ones that wouldn't be."

"I guess to avoid it being disproportionate you'd have to go have someone check them a lot anyway."

"Technically if someone is in a cage you put them in, and you do nothing further to bother them, you don't incur any more debt. Until they starve, but you wouldn't have to check very often to avoid that. But most ways of caging someone would run a significant risk of hurting them, and that would count, and people'd come looking for lost loved ones and you'd end up with a mess. I'd expect."

"Makes sense."

"One of the things my father's working on is remote viewing crystals, and that'll cut down on patrol times quite dramatically."

"There's such a thing as electronic video cameras too."