So I made a sandwich to smuggle in for fortification.
It's not quite a muffuletta, but that was the inspiration. A loaf of rosemary sourdough, split and with some of the crumb removed (it's, of course, waiting in the freezer for me to do something else with it), layers of olive & fennel paste, roasted peppers, serrano ham, chorizo, smoked cheddar, salami and gherkin mustard relish. Squashed overnight in the fridge under a weight, to make it sliceable.
We only took half in, and had a quarter each. Along with popcorn, some pretty horrible beer and a shared scoop of ice cream, it saw us through to lunch time today. Steve wouldn't have been a 90lb weakling with a few of these to fortify him.