Natalia from Piece N Quilt has a great tutorial for self-binding blankets. Here is one that I did a couple of months ago.
Front - Red flannel w/ yellow, green & blue dots
Back - Blue Mickey Mouse Flannel
Close-up of the back.
These blankets are really simple to make. I also have the fabric to make one for a girl. It's on my LONG list of things to do.
p.s. This is in my Etsy shop for sale if anyone is interested.