Bob-a-Jobbers
In order to raise money for local good causes Cubs and Scouts used to hold an annual Bob-a-Job week. During which they would knock on doors and cheerfully announce 'Bob-a-Job' in the hope of intimidating people into parting with money for odd jobs which they would do badly but with gusto.
A 'Bob' is literally a shilling, or five new pence, which is worth less than eff-all these days.
What with the increased cost of lager and fags surely 'Pound-a-Job' would be more appropriate, but it doesn't have quite the same ring to it