I love me some pancit. :D Also, whenever there's a party that we're invited to and we need to bring some food, my mom usually makes lumpial. Sometimes she would even fry them at the party to make them fresh! ;D
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If you grill out hot dogs, and burgers you could also make some make/marinate some kabobs the night before. Make some yogurt/dill sauce, bring some flat bread, cut up some tomatos, and boom! We have confirmed Gyros. Most of that stuff is easy to make ahead of time and then transport.
You could even make hummus!
If you're going to make pancakes, maybe an omelet bar? You just have containers of ingredients and people can pick what they want in the omelet? You could have a base cheese omelet price and add .25 or .50 cents for every extra ingredient they add.
I'll try to brainstorm some more.