Can you use any of the kitchen space? We've got a very small office team so I get my own drawer in the fridge but this may not be practical for you. (I keep some water, packs of tuna & crackers fruit salad and microwavable rice in there, and have some frozen meals in the freezer.) I also snuck in a few cans of pasta, soup and some water under the counter. I don't want to look like I'm stocking for aramageddon so I don't keep more than a few days worth of food in the kitchen.

We've always got lots of fixings for coffee, tea and hot chocolate in there and we do a pot luck lunch every month so there's always extras floating around as well.