My GF is going off for a long weekend with some friends in a couple of weeks. They are renting a house and will be doing some cooking with everyone having a specific responsibility. GF is in charge of appetizers. I've given her a few recipes and ideas such as marinated cheese, a marinated garbanzo bean salad, some easy individual pizzas made with tortillas. Ideally she'd like something she can prepare ahead, that will keep in the fridge for at least a few days, and that is easy to transport. Any suggestions? Thanks!