I traveled to Australia to bring my bike freakiness to a festival called Corinbank, put on by some of the founders of Rat Patrol Oz. Along the way I was impressed by the variety and cleverness put into the bikes in Australia. There are two prevailing clubs: Rat Patrol Oz located in Canberra, and Tongue of Fire from Adelaide. They didn't even know each other existed when TOF announced a tallbike tournament, so I suggested to RPOZ that they attend and much fun was had.
Here are some of the more impressive bikes from Rat Patrol Oz:
Master Gravity Esquire... it unbolts into two tallbikes and can carry a grill or a sound system.
The SS Mitzie (tall amphibious couch trike):
Here are some of Tongue of Fire's bikes:
The Golden Gimp:
King and Queen: (this one is not normally ridden that way)
Two Dollar Deal: