I have a Lovey and a Blanket. Okay my DCs have them.
Here's a picture of my DS wrapped in his
Lovey. Jack is about 13 months old in that picture. Stacy has a picture of him as a newborn wrapped in his lovey on her
Little Lizards page. I used it for nursing Jack a lot. Our Lovey is actually a little smaller than her standard size because I had it custom made with some fabric I had, it's woven on one side and fleece on the other. She made is as big as possible. I'll have to go and measure it later, DS is currently sleeping with it right now.
The Gecko blanket that my DD has is much bigger. It's larger than a crib blanket, so I'd think it would be a bit much for a nursing blanket.
The lovey really makes a great size, it is also a great transitional tool for when they aren't nursing anymore. They still have the loving comfort.
I'm going to order one of the pretty silk ones that Carrie makes for Radish. Just need to figure out what color I want to get.