When I need a fast baby quilt I do a rag time. I can do it it a weekend and don't have to worry about quilting. They are always loved when I give them.
I keep a collection of flannel on hand. I do the girls in pastels unless I know there is a nursery theme I can coordinate with. I like to do the boys in primary colors.
If I am in a super hurry I do all 9 inch blocks. If I have time I might do a 9 inch block alternated with a 4 patch.
Hope this helps :-)