Hosting a bbq this weekend for adults and some kids. Would like to be able to do as much of it ahead of time as possible. Had this group last year and the highlight was an amazing tomato, roasted fresh corn and basil salad with balsamic vinegar. We'll marinade a flank steak and some chicken breasts...but wide open aside from that. Most of my guests will be bringing a dessert, so I think that's covered. But what else would you recommend that is relatively simple, very delicious, and able to be made ahead?