It's a treasury!
It's really hard to get an Etsy treasury. You need to know when enough lists will expire so that the number is down to less than 333. Then you have to be at the site and click to create it as soon as it opens up. They let everyone who is there in time create one, and then the number of lists goes up to ~900 or something ridiculous.
However, they do have a tool called Poster Sketch that allows you to prepare a treasury in advance, and will automatically save what you put in. Of course, there's no actual link to it from the main site; it is hidden inside a tutorial on how to make a treasury.
Seriously, Etsy, why don't you have a link to the poster sketch?
Hopefully people will look at my treasury and buy stuff from it (especially my yarn and Riv's earrings). Some of the things in my poster sketch actually were purchased between when I created the list and when I posted it, so I had to put in alternates. Maybe my list is good luck!
Screen shot since the treasury will disappear on Saturday evening: