I usually don't use the same pattern but I did the same pattern in different color schemes for my triplet granddaughters. I might use a similar a theme for siblings sharing a room, like fairy tales, but different fabrics and different patterns.
Since the boy is 1, I would make a simple stuffed animal.
https://www.fabricworm.com/frpatuheheel.html
My grandson is now almost 6 but he loves his elephant that goes with his elephant quilt.
http://birchfabrics.blogspot.com/201...nry-helga.html