You can also put Pickapeppa Sauce
on the cream cheese.
Cookies, brownies and Rice Krispies treats are easy.
My wife often makes homemade pimento cheese sandwiches - she adds some cayenne pepper instead of that sickingly sweet stuff at the grocery store. If you quarter those, they are easy to eat while underway. Same goes for cheese straws and they are pretty easy to find in a grocery store.
I have a friend whose wife always takes stuffed grape leaves.