I found two balls of rather fancy wool and silk Japanese yarn. Each ball was exactly enough for one warmer. It’s a chunky yarn, knitted in rib, and reaches from near elbow to tips of fingers, with a cunning thumb slit.
Ideal for dog walking! I stick my thumb through the slit and can fold down the finger part for poop picking up. Otherwise I’m covered ( by warmth, not dog business)
So, the brain can work sometimes. Cubic needle tips help the hands too.