Make Your Own Baby Sling
Here's a tutorial offering step-by-step directions and pictures on how to make a ring sling, like the Maya Wrap.
And here's how to make a pouch, kind of like a Kangeroo Kozy Pouch. I found this link through Progressive Pioneer's post on making a pouch for her new baby.
Christina @ Birthing Your Baby
Independent Childbirth Classes for Central Maine
Mamas & Muffins: New Moms Group