Keep the change

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Keep the change   
References in classic literature ?
Bill gave him five dollars and told him to keep the change.
This was all practical, so one of the children went off with a penny to buy an envelope and a sheet of paper, and to keep the change.
Keep The Change (KYM) is a Big Lotteryfunded project which helps young people aged 16-24 with finances, including budgeting advice, homelessness/ housing, benefits, access to grants and saving.
Stopping off for a coffee and a croissant, I gave the waitress a banknote and told her to keep the change, thinking my tip was the loose change out of the Ukrainian equivalent of a fiver.
But of another he said: "50p tip, keep the change, nice guy.
Binigyan ko sya ng P1,000 at sinabi ko keep the change," she said.
Andreas is the author of Change Your Mind and Keep the Change and other books.
Spoon Me Frozen Yogurt named the Old Tappan Volunteer Fire Department as the first recipient of their Keep the Change Program, a program which gives back monetary proceeds to organizations and charities within the Old Tappan community.
In Keep the Change, Dublanica sets forth on a dizzying quest to understand the mental math and morality of gratuities.
Also, investigate savings arrangements such as the Keep the Change program at Bank of America: Each time enrolled customers use their bank check card, the purchase is rounded to the nearest dollar amount and the difference is moved to the person's savings account.
Keep the change - Cadwch y newid (Cad och e n-e-wid)
When king Henry VIII set up the first official post service, he contracted innkeepers to keep the change of horses for dispatch riders.