Slings (wraps) - the making is the easiest bit - you just buy a 5 metre length of jersey weave cotton material (I need to double check with the lady at the slingmeet for exactly what I ask for when I go to the shop, as I know nothing, but basically it's slightly stretchy material like T-shirt material)
Then you cut this in half length ways, giving you two for the price of one! If you get this jersey weave, apparently it doesn't fray, so no need for hemming or any other sewing malarkey!
I'll try to find a website showing how to wear it, as I know I'll make it sound really complicated if I start to describe it. But I can still remember how to do it, which is impressive, and "Bob" the baby felt really secure.