Is it like a schoolbus yellow? What weight is it? What's the yardage? Chances are, it would make a fabulous shawl. Mohair fluffs nicely, so worked up on (relatively) large needles for it's (usually) thin weight, it looks fabulous as lace. As a shawl, you can wear it over other clothes for extra warmth (in temperature and color, sounds like!) without the scratchiness being a problem. I've been working up an Icarus shawl in a similar color (cadmium from handpaintedyarn.com, I'm really liking their stuff) and it's so cheery. Yellow is my most favoritest color
In all seriousness, if you can't find a thing to do with it and want to sell it, drop me a line?