I did aliens and space ships for my son's quilt. I tend to lean away from the fluffy animal and pastel baby baby stuff, it's not something that can really grow with the child and I make "baby" quilts/blankets big enough to last until they're like 10. LOL My 5yo still uses the blanket I crocheted for her when I was pregnant (long before I started quilting).
What about dino's? Sock monkeys are super cute, too.