This is a super fun baby blanket to make and is reversible as the pattern is the same on both sides. You can use any yarn that will give you the appropriate gauge but works very well with DK.

600 yards will give you a blanket that is:
26 in x 26 in before blocking; 35 in x 35 in after blocking
Add yardage to make this blanket larger.

You can use standard needles or use a circular needle to go back and forth.