Rainbow/Color/Weather Theme: Make a rainbow! Good craft for working on cutting skills. Also consider having the kids pull apart the cotton balls first (using those pincers!) for a little more fine motor focus.
Try These Free, Printable St. Patrick& Day Coloring Pages: Crayola& St. Patrick& Day Coloring Pages for Kids
Free Downloadable Halloween Cross Stitch Pattern
Preschool Crafts for St. Patrick's Day Paper Plate Rainbow Mobile Craft (pinned by Super Simple Songs)