I've been getting a lot of inspiration for St. Patty's day on a lot of link parties and pinterest. Here's a sampling of some of the great ideas out there!
The Sewing Loft has a great tutorial to make a Scrappy Shamrock
A St. Patty's banner and printable from Lolly Jane Boutique
From My Heart's Desire, A Burlap Wreath for St. Patrick's Day
A Yarn Wreath from His Frugal Servant
Another Burlap Wreath from Pocketful of Pink
Feeling Lucky from Newlyweds on a Budget
And I've found a lot of printables (I'm not good at creating these so I'm always happy when I find some)