Another great question about Etsy, (or in this case, EtsyMini). Thanks for asking chiquifrog!
Here's the answer from loosewirestudio:
"If you select your Featured items, it will bring them up in order.
To feature items, click the little grey star in Your Etsy. To order them, click on Featured Items in the left hand column."
(Click here for the Etsy Forum post).