Here is my design. I used simple shapes to create the isotype of the ping pong ball with a glass, creating the effect of figure and ground, this gives you a unique and very simple too easy to remember.
I like the designs, but it throws me off a bit that the ping pong ball appears larger than the cup. It almost resembles a cup flying in front of the moon. Keep experimenting with the black and red backgrounds, I like that aspect.
I like 59, but can you try different kinds of motion tails from the same direction? I'd like a different look for the tail, but I like the rest of the design.
I think I have only one more change I'd like to see made: I like 69 the most, but could you rotate the ball and flame clockwise so that the ball is flying into the cup at a flatter angle?
I'm looking for something like pp.jpg and pp2.jpg that I've uploaded in the contest brief. I just wanted the ball to be rotated clockwise slightly. Please make new designs similar to the two I've included, with and without the red outline on the text.