Depending on the age of your children, leprechaun traps are really fun.
We made them in Kindergarten, but each year, my son would add to his to make it more elaborate. You can use shoeboxes, oatmeal containers, or just make one of your own from cardboard pieces and then decorate it. Don't forget to add pieces of gold to attract the leprechauns! Hope my son will still want to do it this year, but he just turned 10, and of course, doesn't believe any longer that the leprechaun makes all that mess around the trap trying to get the gold. I bet if you searched on Pinterest, there would be leprechaun trap ideas and photos for you to view.
Irish Soda Bread is easy to make. Google search will yield many variations on this, so you can choose the one you think you'd like best. I like it plain, but some people add raisins and nuts.
I like to decorate for various holidays, even though we're Jewish. To me, St. Patrick's Day is just fun. We have glittery shamrocks I put around the kitchen, and my son likes to be creative with gel cling window decorations.
Sometimes, I'll buy a shamrock plant from Trader Joe's. I like the little delicate, white flowers that grow on the plant.
I also love Irish music, so we play traditional and some of the newer music as well. If you have Pandora you can find Irish music there.
I've always been fascinated by Ireland and Irish history and visited there years ago. It's a really beautiful place, and I'm looking forward to going back soon.
Hope you find some fun new things to add to your celebration!
J. F.