I decided that heavier objects such as metal ball-bearings or solid plastics would bounce much lower so would lighter objects without much substance such as balls of paper or hairballs. I also decided wood wouldn't bounce much but I believe it would have bounced a bit more than these materials based on the kind of wood.
Then I began to think about other possibilities aside from weight such as gravitational pull, a different bounce trajectory and natural objects.
I liked the idea of the moon impacting in the ground however I felt that it didn't meet the expectations set in the project brief. It didn't bounce, it just hit the ground at great speed. I considered a pom pom because when I dropped one it very often bounced backwards. Which I thought was a clever idea but if that was the only difference then I wasn't demonstrating any skill. Finally I decided I liked the idea of the orange as there was a lot I could play about with.
In addition I decided I liked the bouncy ball idea as it would bounce much higher and closer together than an ordinary bouncy ball.