Winter squashes can be used in any way that pumpkin can.
There are soups, sauces, baked goods, plus just as a vegetable (like a sweet potato).
Squashes and sweet potatoes are some of my favourite things to have around, because no matter what types of spices/seasonings you have on hand - they can be made to taste entirely different from one meal to the next.
Then, there's spaghetti squash - the versatile, vegetable, non-grain pasta.
Summer squash (zucchini) can be eaten raw or cooked (stir-fry, baked, seasoned, added to soup ...)
The list could be nearly endless.