Yarn estimates (DK, Worsted, Aran, Bulky) in yards:

Carseat blanket (~24x24in): (580, 410, 325, 230)
Stoller blanket (~30x30in): (1090, 770, 610, 428)
Receiving blanket (34x36in): (1480, 1050, 830, 580)
Crib blanket (~40x45in): (2250, 1600, 1270, 890)

My blanket specs:

Gauge: 14st x 12 rows = 4x4 inches unblocked
Needle size: US 11
Yarn used: 8 skeins of Sublime Extra Fine Merino Worsted or 874 yards (note: yarn held double)
Finished Blanket dimensions: 26x30