I make a salad and put it in a tupperware container that is rectangular and pretty deep and I put it in my trunk bag. but there's not room for much else in there.
__________________
"Think of bicycles as rideable art that can just about save the world". ~Grant Petersen
Cyclists fare best when they recognize that there are times when acting vehicularly is not the best practice, and are flexible enough to do what is necessary as the situation warrants.--Me