What is the best investment for quick money? $500.00 to $1000.00.?

The investment would be $500.00 to $2000.00, Not really long term a couple of years. It's for my Mother- instead of keeping her money in a savings. But she could get to it if she needed to.

A mutual fund is your best bet. Remember that "quick" money means risky when it comes to investing. Better to go slow and not lose your money.

stock market. that's the quickest.

Roulette.

get a life insurance on your old relatives if the insurance company accept, they will die one day.then you get the money.

the safest in my opinion the best option are CD accounts. they are also low risk.

have a hand of BlackJack for $500

It's hard to ask what the best way investment to make quick money is, because first you have many options of investments, and second your situation is very vague. The more money you have upfront, the less risk you can afford when shooting to make this $500-1000. It is vague how much risk you can afford. If you cant afford to loose money, then it's not smart to take on much risk of course. You leave the definition of "quick" vague which poses a problem because the right investment vehicle for you depends directly on the amount of time you have to make the amount of money you specified. Generally, to get as close to guaranteeing a certain % gain, it will take a lot of time on a fairly large base of money. (With $10,000 assuming a 5% interest rate which is very safe, will earn you your 500 in a year)
In the investment world, you need to look at your situation and decide what percentage gain you will need, in order to meet your goal. And once you decide what percentage gain you need, you have to decide how willing you are to loose money, or how much risk you are willing to take on. Earning "quick" money involves speculation, which is basically playing a guessing game with a type of security. Speculation is extremely risky. Although this risk can potentially bring great returns. (I am assuming you plan on investing in the market)

If you decide that you can risk everything, and have very little time, your options are limited but you do have some.
Generally, the stocks that move the most, are smaller stocks or small-cap stocks. Their price per share usually moves the most. Also you can consider the ultra-risky IPOs or initial public offerings of stocks. You can look at investing around earnings calls, or (I never would recommend it without some knowledge of the markets) stock options which are very complex and speculative and most times promise a very large amount of risk which can either give you the return you are looking for or cause you to loose a lot.

If you are serious about investing and don't know much about it, get a financial advisor who can assist you in meeting your financial goals. He can be an invaluable resource.