You can always get pasteurized egg whites and drink it by the glass.
On the real, eggs aren’t a “to-go” item for me. I’ll eat them prepped at home, or prepped at a deli. I don’t even make my own breakfast sandwiches, but if that’s your thing, that’d be a great to-go item. I seen guys at the office have quiche for lunch too, and that’s a whole nother process.