Live uses a plank
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Live uses a plank to carry multiple cacti in one hand, while blowing bubbles with the other. She stuffs some balloons underneath the tea cart, and puts the cacti on top of it. In total, she manages to move six pairs, and earns third place.
(Written by Karl Craven)