Favorite patterns for leftover yarn?

What are your favorite knitting patterns for leftover yarn? I guess you could say "scrappy projects" but most of my leftovers are enough yarn that I wouldn't really call them scraps. Lots of partial skeins and various weights, but mostly DK and sock weight. One of my goals for this year, in addition to a whole year without buying yarn, is to use up my leftovers for at least a few projects.

I've seen this question asked before and the usual suggestions are using them in colorwork yokes, or for hats and cowls. But I'm hitting a wall - can anyone suggest a pattern that's not super well-known? I scrolled ravelry for a while and didn't find anything that was really exciting. I'd also love a unique pattern, like a backpack or something cool.