I'm celebrating Chanukah for the first time this year and hosting my mother and sisters (along with my young kids) for a very casual, family supper and candle-lighting this Thursday. Along with latkes and salad, I was thinking I'd like to make little sandwiches of roast chicken, cranberry sauce, and goat cheese. I pictured them being on very small rolls--2 or 3 inches across?--and don't want to deal with making them myself. I live in Arlington and work in Cambridge. Any suggestions where I can get ahold of little rolls? Thanks!