Calzone
Calzone, a traditional Italian stuffed bread, was originally shaped into a long, narrow tube, akin to stromboli; in fact, the translation of calzone is "pant leg" These days, most calzone makers simply roll dough out like a pizza and fold it over like a turnover. We'll give you the "pant leg" version here — though feel free to go with the turnover shape if you prefer.
As for filling, the sky (or your imagination) is the limit! Simply choose your favorite combination of sauce, meats, cheeses, and vegetables; we give you suggestions below. This is a great time to use up those odd bits of leftover (but quite tasty) savory ingredients. Notice we're not including any specific amounts; that's up to you, and your preference for minimalist vs. overstuffed sandwiches, to decide.