The original idea included an audio system interacting with the player depending on his result and a belt system allowing the basket to move up and down making the game more difficult. Both of them were let down and kept for further inprovements.
Other solutions were proposed to build the catapult. One was using the motor to activate a lever-catapult and another used springs.
The cigarette ashtray box could also have been modelled as a drawer. This would have allowed a small amount of sand to rest in it to protect the parts from badly extinguished butts.
The cigarette sensor can not distinguish a cigarette butt from another small object.
The upper part of the box was glued upside down, so there are some misaligned holes between the outside box and the upper cigarette sensor.