I also work for a Jimmy John's as a bike delivery person, WVU Morgantown, WV. Our solution is either putting a fountain drink in a larger drink cup with a lid on top so if it spills you can pour the drink back into the cup or we take a small latex glove and put it over the top of the cup which keeps them from spilling. Hey, remorashadow, can you bring me a number 10 with dijon instead of mayo plz?