If the game is gona to be rated as adult/mature type a game and most of the simulator games are not for kids.
Then why not Drugs, Even Alcohol is already in-game. And drugs can make the game more excited!
1.Psychedelic and Hallucinogenic Chemicals and Mushrooms. ( Mushrooms can be found in forest )
2.Stoner plants that you can grow on your garden or in your basement.
3.Caffeine & Mdma that can make you hyperactive.
1.Nicotine & Tobacco to keep the stress away & relax [ Addictive ]
2.Alcohol is alredy in-game and it looks pretty amazing!