The only requirements are that you avoid anything that comes from an animal, including meat, dairy, eggs, and honey.
Here are some ideas:
Cold food
- Couscous and roasted vegetables
- Marinated olives
- Pasta salad
- Vegetables (e.g. peppers, celery, carrots, cucumbers, broccoli) and hummus
- Hummus Sandwiches with sliced tomato, cucumber, onion, and lettuce or spinach
- Salads of all kinds (without honey or egg-based mayonnaise in the dressing)
Hot food
- Garlic bread (made with vegan margarine)
- Chili (based on beans and vegetables)
- Curry (Thai-style or Indian-style)
- Vegetable spring rolls
- Soup and bread
Ready-made vegan buffet items
- Potato chips
- Tortilla chips with salsa or guacamole
- Pita chips with hummus
- Fresh fruit (preferably bite-sized fruits like grapes or strawberries)
- Olives
- Cherry tomatoes
- Nuts (if not honey-roasted)
- Falafel, spring rolls, samosas, or dolmas
Sweet items
Many bakeries offer vegan cookies, cupcakes, and pies. Check the ingredients that there's no dairy, eggs, or honey. Or try your hand at making your own.