When I was having a look at some shamrock pictures the heart shapes of it appealed to me.
Paper hearts are easy to make and a handy paper craft technique for children to know. But for younger children you could just have lots of heart shapes of different sizes ready for them to arrange and layer as they wish.
To make the heart shapes fold some paper and then cut the shape as below. To then make lots of hearts that are the same as each other, trace around the first one you made and then cut lots more out.
Arrange three of the hearts to make a shamrock shape, and add a stalk. My stalk is also cut from a folded piece of paper – I did that as I liked the texture the fold were giving to the shapes.
I made some gradually smaller shapes in alternating shades of green, but this does not have to be in just greens – how about a rainbow shamrock?!