That... is very cute... but faeries are weird.

Follow follow follow.

They get to the court. It’s inside a hedge. The aesthetics are different than the courts he’s seen so far but the fundamentals are the same. People gather around for the presentation.

Cam has little notecards and can present things!

People are intrigued though they do not actually get to fascinated until they get to see cool stuff they can’t get some less complicated way.

The key here is the certificates, which will allow them to capture debt-system-legible tokens of performing beneficial trades. All they have to do is, using the denominations they've invented and stabilized, enumerate how much surplus there is, agree on how to divide it, assert it on certificates like so, and boom - valid certificates may be inconveniently redeemed for more than their value if they show up during the fifteen subjective minute window at dawn on the fourth of any sidereal month according to this human calendar whose leap years he is going to mention but not explain!

Some people think this is neat but a lot of them are...confused. There is muttering. So then there's paper that can cancel some debt but is not, in fact, actually worth anything except to the debt system what with those conditions being wildly inconvenient? It'd be useful to have a little on hand for situations where you just want to cancel and don't care about getting anything in return but usually you...want something in return...though it's sort of worth something since it's also convenient for other people to possess? But it's not liable to be very useful. 

"You might be better than me at getting across the culture gap here," Cam suggests to Econ Faery.

"I think you should make some stuff. Food and plastic and electronics and so on."

"What's not going to be annoying to have around afterwards?"

"They'll take it. But I guess to be safe it could be mostly food."

Decorative plastic tray of hors d'oeuvres and a little electric tealight in the middle.

There's some muttering. 

People come up and take a look at the things. 

"And you'll only trade your - certificates - for them?"

"That's not strictly required for the scheme to work but I am accustomed to delineating prices in fixed denomination and I have locally irregular hangups about some of your popular debt resolution mechanisms."

Confused fairy. 

"Our court has a lot of things like this, and will have more, because he can make them any time he wants to. The only problem is payment. You might be able to trade other things but you can certainly trade the certificates."

People try arranging trades among themselves and writing things down. People take hors d'ouvres. 

People really like hors d'ouvres.

Awww. Would they like more hors d'ouevres?

There is some scrambling to make more trades so they can afford them.

"We had a survey. To help everyone pay for everything."

Then they will also fill out surveys in exchange for hors d'ouevres.

Awww this is cute. It's fun coming up with different interesting hors d'oeuvres for them.

"But we can only reach him at those odd hours -"

"You can only redeem them at twice their debt-value at the odd hours. The rest of the time, they're only tradeable for the value that's printed on them. But people can use them to buy things from him, and people are going to want to buy things from him, so people are going to want them."

There is a very big crowd for as long as Cam will tolerate it.

Cam wags his tail and sells snacks. What do faeries like? Avocado eggrolls? Skittles? Rice cakes? Tiny poppyseed muffins?

Faeries like all of these things!!! A lot!