Yeah, I understand Pokemon reference, but what's so special about this item? What does it do? :O

According to Subetalodge it gives you 3 random plushies when you use it. I don't have any more information for this item other than that, but it's likely also popular because as you mentioned it's a Pokemon reference. Plenty of people could want it for galleries or pet treasures.

Thanks for the answer :D Well, seems like its more valuable as a collection item ^^