Needed Supplies: cardboard, paper plate, gold foil "grass", craft foam or cardstock shamrock shapes, ribbon (for hanging), and acrylic paints: green (two shades), black, sky blue, and whatever shades you'd like to use for a rainbow. I used purple, medium blue, green, yellow and red. I really like orange too but I was OUT (OUT! as if?!) of orange acrylic paint.
Additional supplies (these are things most people will already have on hand): box blade or some such to cut cardboard, paint brushes, glue gun and glue sticks.
For this project, I measured the backing cardboard to fit the supplies I was using. I started by tracing the paper plate, then laying out the shamrocks around the plate outline to get the dimensions I needed. I marked the edges of the shamrocks on the cardboard with pencil. Once I set them aside, I then "connected the dots" on the circle those marks made. That outer circle is the one you want to cut out with the box blade.
Cut the paper plate in half. Use it to trace the top of the "pot" section of the center circle. Paint that section and the outside of the paper plate black. I missed getting a picture of my adorable daughter painting the paper plate for me. She did an excellent job. Next paint your rainbow. I started with the purple and painted one arcing stripe. Paint a blue stripe next to the purple, then green, yellow and red. You get the idea. :-) Fill in the rest of the sky with blue.
Paint the outer circle with green. I used metallic green, which went nicely with the sparkly shamrocks. I like sparkly.
Hot glue down the plate and shamrocks. I recommend laying out the shamrocks before you attach them so you make sure the spacing is good. Unless you're really nerdy then measure off the circumference, divide by the number of shamrocks you have and space them exactly. I like the eyeball-it method personally (even though we are a really nerdy family).
Glue your ribbon (or cut up T-shirt in my case) to the back. Make sure your volunteer knows what you are asking when you ask if the ribbon is centered. As you can see, mine is slightly off kilter. I love you, Melanie! But I was asking if the ribbon was centered, not whether the whole thing looked good or not. LOL. Stuff some gold foil shreds into your pot and VOILA!