PLAYMOBIL 4887 SAINT NICHOLAS with ANGELdoes a pretty good stand-in for St. Patrick all by himself, but you can use stickers or paint to color his vestments in his iconic green, like this mockup I did in Photoshop:
Playmobil North American Forest Animalsor the Playmobil 4842 Treasure Temple with Guards. The cheaper option is to pick up individual Playmobil Snakes on Ebay.
Later this year Playmobil is releasing a Celtic Knight. This is a good figure for St. Dichu, the Celtic chieftain whose sword arm was miraculously prevented from harming St. Patrick but who later became a model of sanctity and peace.Playmobil Druid, now discontinued, which you might be able to find on Ebay. St. Patrick confronted and overthrew the power of the druid priests one Easter at Tara.