I don't see why re-rolling scraps wouldn't work; the cinnamon-sugar idea should work fine, too. Or you could make little dough balls and dip them in garlic butter, then sprinkle with salt and Italian seasoning and bake them.
For savory, you could buy thick, chunky soup to fill the tarts. I'm thinking a creamy turkey or chicken chowder with veggies; it would be like a chicken pot pie without the top, or a (insert animal herder here) pie without the mash on top.
Anyplace where people argue about food is a good place.
~ Anthony Bourdain, Parts Unknown, 2018