I created this pattern to use leftovers sock yarn after knitting adult socks. They are toe-up, so you can make the leg part as long as you wish.
They used a Turkish cast-on, a basic short-row heel and Jeny’s super stretchy bind-off.
I have made them 2 at-a-time using the magic loop method but should be easily do-able with your favourite method.
The size could easily be adjusted by changing the needles size or by increasing more at the toe.

The pattern is both written and charted.

ETA: The first version of the pattern had a mistake in the toe increases. Please check that you have the right version of the pattern before starting your project. :)