Marinated veg - field mushrooms, aubergine, courgette, onion.
Meat and veg kebabs - e.g. chicken thighs or lamb with onion, tomato and pepper all on a skewer after having been marinated in oil, lemon juice, herbs.
Fresh mackerel or salmon
Good call from Big Gill there - mix up a load of sangria.
Get some cocktail recipes on display, a range of cocktail ingredients, some shakers and lots of ice, and just put them all out and leave people to make their own.
Lots of different fresh fruit juices