Make a homemade puffy paint:
Place equal parts of nonmenthol shaving cream and white glue in a resealable plastic bag.
Add a few drops of green food coloring.
Squeeze together until thoroughly mixed.
Snip a corner of the bag, and let your child squeeze the paint onto a shamrock cut-out.
Let dry for at least 48 hours!

Everything's green on St. Patty's Day, even your flowers!
To make green flowers:
Pick up some white flowers, such as carnations, from your florist.
Make a solution of 15-20 drops of food coloring for every half cup of water.
Cut at least 2" from the stem of your flower and set them in the solution!
Your flowers will be dressed for St. Patty's day in less than 24 hours!

You've heard of Easter Egg Hunts, how about a "Gold Hunt."
Place gold coin candies in a plastic baggie. Tie with green curling ribbon.
Hide the baggies and let your children find them!