The kitchner stitch

Finchley grafting
Yarn over stretchy bind off
Two color bind off
Hiya Hiya Grandma’s stretchy bind off
Really stretchy bind off
5 ways to have a neat bind off edge
Why use an applied I cord?

Alternating, suspended bind off
Five ways to bind off
Tutorial: Working a border edge join

This one will come in handy when doing afghans and you want to change colors at the end of a row.
Tutorial: Working A Border Edge Join
Knitting with cable tips
Icelandic bind off
This is an easy VERY stretchy bind off. I have not tried it yet, but I think it would be good for binding of the toe up sock. I has a ridge like a I cord.
Invisible bind off

Scroll about half way down this page. Lots of other interesting articles as well.
Instructions for invisible bind off.
Interlock bind off
How to make the last bind off stitch neat.
Knotted knit two together bind off
Haven’t tried this yet, but looks pretty neat!
Binding off from both ends.

I have never done this and wonder what project would you use it on.
http://jolieaelder.blogspot.com/search?q=bind+off+at+both+ends
Apply an I cord to finish an edge
Looks easy enough and give the edge a nice finish.
How to knit an applied I-cord video with written pattern instructions