First and foremost, a tiny leprechaun will be traveling from island to island, spreading the joy of the holiday as he goes. If you spot him, be sure to click on him for “a whole lotta coins.”
Or, if you’d like the chance to earn even more coins when you click on him, you can purchase a Pot of Gold from the store for 39 Facebook Credits. Apparently, this will attract the leprechaun to your island, and will grant you with an even larger coin reward if you can click on him when he comes by.
If you’d rather just decorate for the holiday instead of worrying about catching the leprechaun you can pick up a Rootbeer Wagon or a Horseshoe Topiary from the decorations tab of the store for 29 Facebook Credits or 3170 coins, respectively.
Head over to your own island to have a chance at finding the leprechaun, or to simply purchase these new decorations for yourself.