I don't have the recipe, but my grandma frequently makes taco salad without the meat when we get togeather for father's day. Half the time it seems accidental, other times it seems intentional. It doesn't really taste that much different without the meat the way she makes it. Either way, it's better (from a food safety perspective) than with the meat when it will be sitting out for hours.

Seperately, various types of pizza are good. I like a veggie pizza. IIRC, you take a pizza crust, mix ranch dressing with sour cream (to thicken the dressing), and top with a variety of veggies - carrots, broccoli, coliflour.... Put it in the fridge for a bit to set, and serve cold.