I lost my weight originally on WW, and always had my version of their zero point soup around. I'd make a large pot every Sunday and eat it all week. I still make it a lot in the winter. My DH calls it "veg soak."
Basically I start with canned tomatos and water or broth. I add onions, carrots, celery (not always), mushrooms, any leftover veg we have except broccoli/cauliflower (which I don't like in soup unless it's creamed). I also add a can of beans for a little protein. S&W used to have cans of spiced beans - Santa Fe I think and also Caribbean Black Beans - that were yummy esp in soup. If they still make them, my grocery store doesn't carry them.
Glory had a recipe a couple weeks ago with leek and chickpeas that was excellent - very thick and spicy.