When I am at a loss as to what to knit next, I usually end up casting on socks. They are usually easy and make a great carry along project.
Sometimes they are my “in-between” project. If I get bored with a larger project, I can always work on the socks. And before you can say, Snap, Crackle, Pop, I have a new pair of socks to wear.
Maybe all you knitters out there who have not yet made socks, should give it a go.