I have discovered a variation on Magic Loop knitting that I really like: Traveling Loop.
Instead of making 2 loops at the starting and halfway points in your knitting, you just make the one loop at the beginning. [I cross the cable over itself to close the loop.] Then, as you knit, the loop stays in one place and moves around the knitted piece.
I'm doing it for a hat that I'm knitting for my twin and it works quite well with the Addi Turbo needle I'm using; much better than Magic Loop. I plan to try it on my next pair of socks as well. One bonus is that it marks the start of your rounds, too.