a watch cap? No, I will not ask any further
If you are looking for projects that are quick and give you practice: buy cotton yarn (that is harder to knit with, I admit, but useable for the purposes I am talking about) and make pot holders (thicker yarn, you do not want to burn your fingers), dish cloth or wash cloth (any yarn that will hold up and feel right!).
They are relatively small and quick and you can use all different methods on them. (like different stitches or color changes and such) and they will serve a purpose.
if you just knit around on your swatch... that is ok, as well, of course. Then you can just keep it or unravel it. But the "I made that" satisfaction will be missing a bit.
I am kniting for more than 30 years. And I have been knitting a lot. A BIG LOT. But to this day... I have only ever made 2 scarfs and they were thin relatively short fashion scarfs. No long scarfs have ever been attempted / made / finished.... well, never all of the above.
I WILL have to make a scarf for my mom for x-mas but I am dreading it and am looking for a very interesting pattern (she wants cables, so I will design something with that) to keep the boredom away.
If you really WANT to make a scarf: make one, of course. But only then.