Kick a swan's head off.
The Queen hates swans, and will chuck you a tenner for any that you kill.

Or a fiver if you manage a light maiming.
( JessAction Give me all your expensive brandy and hubcaps., Thu 21 May 2009, 23:42, archived)

if she draws a number and smiley face on a bit of paper that counts as legal tender

( Lightguy hail satan, Thu 21 May 2009, 23:44, archived)