RE: Making receiving blankets
I made a couple of fleece blankets for E for daycare (which became his security blankets, although I hadn't intended for that!) I just bought a yard of fleece and cut it in half, so the size is 36" x 30" (I think the fleece was 60" wide). I didn't hem it, since it's fleece it won't unravel.
For flannel, I would just cut and hem. And probably bigger is better if you plan to use them for swaddling, but exactly how big I don't know. If you want to be economical in using the fabric, you'll probably be limited by the fabric width (that is, if you want to get 2 blankets per yard, for example).
HTH!
Jen
Jen, mom to
Elliot (8/2/05) and
Lexi (5/19/07)
"Life is what happens to you while you're busy making other plans." --John Lennon