I think every knitter has a few (or more than a few!) of these… it’s that project that you liked when you started it, and you still like it, but other momentarily more exciting projects keep getting in the way, so now it’s been two years since you started it and it’s still not finished.
For me, it’s this scarf:
Clapotis, by Kate Gilbert, with a few modifications, in Noro Kureyon sock yarn. Here’s the pattern on her website, and here’s my version on Ravelry. Kate Gilbert has been one of my favorite knit designers for a while now. Her patterns are well-written and clever, usually combining elements that I like in a way that I never would have thought of, and of course they always produce beautiful finished objects.
I started this scarf two summers ago, with the intention of finishing it in time to wear as a lightweight autumn scarf. That didn’t happen, obviously, but recently I’ve been thinking about picking it up again… maybe I’ll finish it in time to wear this autumn!