Sure, you've heard of making a meal out of the free food giveaways at the grocery store. "Would you like another eighth of a pizaa slice?" Sure!
And you've heard about how when a big meeting that has sandwiches, bagels, or donuts to ply vendors or clients ends and the food is put out in the break room that the rest of the working people, the ones who are not normally in meetings because they're working, decend on such scraps in a fashion to make carrion vultures blush with embassasment. "Sandwiches in the break room!" Stampeed!
But how about a character that makes his lunch by grazing the candy and snack bowls around the office. They go around in a loop to gather up what they can, maybe timing their rounds to the best places (pretzles, chocolate, or those strawberry candies) to when that person is away (lunch, meeting, or bathroom).