Sorry, but I could not contemplate 15 others having their chances spoiled in an effort to accomodate one.
Time-outs. Not practical in this day & age. Reason-anxious parents & child molester fears. Pity, because they can bring quite a few to realise the error of their ways by showing them that doing time, as it were, is not cool and is in fact a total drag.
Humiliation-a million times no! If you are going to use kids to help the janitor, then it must be non-public, non-exploitative in these days of impending cuts and, crucially, the kids must be gaining a sense of usefulness and belonging in doing it.