Okay maybe this can be something after all.
Here are the different items the player could collect in the game.
Money items - The player can collect them to earn money. - Copper : 10 $ - Silver : 20 $ - Gold : 50 $ - Diamond : 100 $ - Bills : 250 $
Energy items - The player can collect them to regain energy.
Health items - The player can collect them to regain health.
Power ups - Give the player special powers. - Soda cans : undetermined - Pepper : undetermined
Tools : The player can use them as weapons or practical tools.