Love the idea of celebrating St. Patrick's Day by tucking cute little bags of lucky somethings in the pockets/bags/mailboxes of your kids/neighbors/coworkers/strangers. One Charming Party has a cute—and free—"It's Your Lucky Day!" printable: just print out the labels, fill little cellophane baggies with chocolate coins or anything you consider lucky (horseshoe-shaped cookies? black-eyed peas? rabbit paws?), and tape the labels to the baggies. Easy, peasy, lucky.