Favorite Boston cheap eats?

Greek Corner: roasted lamb sandwich
Deli-Icious, Davis Square: Any of the ‘melts’ are a huge great sandwich for about $8
Dave’s Fresh Pasta: pressed cubano
Painted Burro: Street-style hotdog. For $9 it’s enormous. Topped with chicharron.
Old School House, Hudson MA: Porto style sandwich. It’s $10, it’s two meals worth of food, it’s bonkers.
Little Q Hot Pot, Arlington: Ma La hotpot, cold spicy beef tongue, etc.