Simple game. Just like A-Z Names, A-Z Pokemon, etc. Go through the alphabet naming one of Ernya's items that begins with the letter you get.
I went through all the items in the Dream Avi maker in alphabetical order, and the only letter that doesn't have at least one item that begins with it is Y. So we can either skip Y, or just put 'Year 1 (Headband/Crown/Streamers/Etc)' instead of '1 Year (Headband/Crown/Streamers/Etc)' for the anniversary items.
The item can be a common, DI, CI, EI, anything. You don't have to put a color or anything, just the item name. And so, I'll start.
Alpin Shirt