Straighten out both hangers and stick each one down the inside of the green corrugated plastic rectangle. Leave about 4 inches sticking out from the bottom so you can put it in the ground. Fold the remaining wire sticking out of the top over the back of the figure. Play the game by taking turns hitting your ball through a maze of veggie characters. You can also use regular cardboard and paint it if you can't get corrugated plastic, but it won't be as durable.
Corrugated plastic is made by several manufacturers.
It is known as Stratocore or Coreplast, along with other names. I found that if I purchased it from a signage store it was cheaper as long as I was going to make several projects out of it. Otherwise, open it.