Mom's mittens are finished. She likes them and they fit.
Since my mother is allergic to all animal fibers, these were knit using a fingering weight cotton and bamboo yarn with a touch of nylon to keep them from stretching out, Panda Cotton Solids by Cristal Palace Yarns. The pattern is "Zebra Long Fingerless Mittens" by Jorid Linvik.
I had forgotten how much I enjoyed two-handed stranded color work and may knit myself a pair of fingerless mittens as well, although I don't particularly think I will use the same pattern. I will probably also use wool. I could have used a pair or mittens this past winter, and I'd much prefer to knit my own rather than purchase something, even if they won't be worn every year. But I don't have yarn or plans at the moment, just a vague idea in my head.