Here's something that you might be able to use, it's for a spilt rail fence quilt that measures approximately 30 X 30 so you have to add more yardage to make a larger quilt. Good hint is to always buy at least 1/4 yard more than it says you need so you don't run out if you make a mistake somewhere and ruin some of the fabric. It also gives you something for your "stash" when you want to make a scrappy quilt.
The blocks are cut 5 1/2 (5 inches finished) with 4 rows of fabric in each block. Sample done in blues and yellows in Alex Anderson's "Kids Start Quilting" book.
Blue fabric for blocks - 1/4 yard of 4 different blue fabrics
Yellow fabric for blocks - 1/4 yard of 4 different yellow fabrics
Inner border - 1/4 yard
Outer border - 1/2 yard
Backing - 1 1/4 yards
Batting - 40 X 40
I would think a crib size quilt would use double the amount of fabric. Hope this is helpful. May in Jersey