Patons classic merino wool - less than a skein will do it
fingering weight mohair - I used vintage mohair
scrap novelty yarn - I used Lion Brand Fun Fur
Knit 9 (10) rounds. Cut novelty yarn, and turn cuff inside out - I think the fun fur looks better on the wrong side, but keep on the right side if you prefer
Join mohair, and knit plain for 4 inches. Bind off using E. Zimmermann's sewn bind off, or method of choice.
Please consider making a pair for charity, such as CIC. Armwarmers are for caregivers!