The corner curler is a slim-headed device (like the one above by Shu Uemura) that allows you to get into the areas a regular-sized one can't reach. I use mine for my outer lashes to make my eyes ...

I opted for the smaller "mini" curlers that would be ideal for shoulder-length hair, but they are also available in "large" for my longer-haired friends. The Sleep Styler's absorbent, suede-like ...