Leprechaun Magnet Craft Kit. Foam craft kits make great group projects! Share the luck o' the Irish with your friends by bringing one of these kits to school. These magnetic crafts are a great way to celebrate St. Patrick's Day. 2 3/4" All craft kit pieces are pre-packaged for individual use. Kits include instructions and extra pieces. We recommend using foam glue or Glue Dots, sold separately online.