After reading this book with Little Brother and Sweet Pea, I cut some four leaf clovers (the template is at the bottom of this post) out of construction paper. If you're doing this with slightly older kids, they could cut them out themselves.
Then we planted them on our mantel, and added some grass.
To make the grass, I cut a piece of light green cardstock into thirds, so I had 3 long, skinny pieces from each piece of cardstock. Then I used the scissors to slice it into grass.
It took 4 1/2 strips to go the length of the mantel.
Read-Along Archives to see the books we've already read.