I have made this Brick-Wall Blanket with leftover baby yarn. Most of the blanket was made with the double-crochet stitch. The rest is a combination of chain stitch, slip stitch and single crochet for a lacy border. And more double crochets for a finishing touch of scallops. Below is a picture of a chart I have draw for this Brick-Wall Blanket. The printable picture-and-chart-only tutorial can be found here.
Here are other blankets I have made with the same yarn. Plus a cape. In fact, all those projects were crocheted with the same yarn balls. Four big balls. I think I am ready for a change of colors… (You can click on the pictures to read about them.)