Leprechauns!

Goodness, has it been a month already? That'll be amended soon. But for now... Hooray for leprechauns! They're such mischievous little blighters; their cheeky nature comes across at the Quidditch World Cup - "The leprechauns had risen into the air again, and this time, they formed a giant hand, which was making a very rude sign indeed at the veela across the field." - and later when their gold disappears before a disgruntled Ron's eyes. I'm trying to think of other mentions in the books and none are springing to mind, but I would think that the Weasleys might make a big deal out of St. Patrick's Day. I wonder how they would celebrate it...