One of the six cowls I made last year was this unintentionally color-blocked bulky cowl I made for my aunt for Christmas. It was one of my stash-diving projects and the second to run into the not-quite-enough-yarn problem.
I used leftover Knit Picks Swish bulky, which has since been discontinued. (No buying more even if I wanted to!) It’s a thick, soft superwash merino yarn that I used to knit the kids’ Christmas stockings. The pattern is the very popular Honey Cowl, which I modified to take into account my totally different yarn weight.
See the details of mine on Ravelry.