Peanut butter and jelly sandwich. (Like for the last 57 years) plus a banana, a ziplock sandwich bag of celery, red pepper, and carrot sticks, a small bag of mixed nuts, sometimes also an apple, or fresh raw green beans. I cram all but the banana on top of my rolled up clothes in my carradice barely. The banana goes in my jersey or vest pocket so it won't get smushed.