Some Suggestions

1- why not add a bank? with full banking services like

Loans: with payable interests. didnt pay then spend some days at jail.
Investments: ranging from capital secured to risky ones.
fixed deposits accounts: with different periods like 2 days, 3 days or one week etc and earning different interest rates.
purchase shares in the stock market: where they may go up or down.

2- option to buy lotteries where you have the chance to win something

3- we would love some more sexual themes too.

who says you cant win the lottery? :smiley:
The odds are small in real life too remember.