My parents are roasting a turkey and poaching a salmon for Christmas dinner. About 20 adults and kids will be there. Most of them are unadventurous eaters. I'm supposed to bring a couple of sides--probably vegetables, ideally dishes that could be served at room temperature, or possibly a hearty salad--but I'm not sure what would go with both warm turkey and cool salmon. I've done asparagus in the past. I personally don't like green beans. Anything exciting, but not too exciting?