The Shayla Shawl / Triangle Scarf is a great one skein project.

Using one Lion Brand Mandala cake this shawl works up quickly with a repeating pattern. The light weight finished item can be worn as a shawl or a triangle scarf.
Wanting a warmer shawl? Increase the hook size and use a medium weight yarn.
Shown in Lion Brand Mandala Genie

Finished Project measures 58” Wide x 27” deep using mandala yarn and 70” x 35” using medium weight