Kid, you need to start thinking in thresholds. There are several monetary thresholds that separate your class from a more well funded class.
1) You cannot use margin with less than $2000 dollars
Brokers require that you have at least $2000 before they will lend to you
2) In 2010, Congress banned under 21 year olds from getting access to credit. UNLESS they get cosigned. This means that even if you have $2000, no broker will give you margin unless you have a (good) credit history already. There was a good reason for this, but its based on the assumption that everyone is stupid, not the assumption that some people are objective thinkers.
3) The brokers that will open an account for you have high commissions. The commissions are so high that it will destroy any capital gains you may make with your $1000. For the most part.
4) The pattern day trader rule. You cannot employ sophisticated risk management while being subject to the pattern day trader rule. It basically limits you from trading 3 times a day (its more complicated than that read it yourself) if you have less than $25,000 in one account.
5) Non-trade or stock related investments: Buy municipal or treasury bonds. They will give you more than a savings account would, and municipals are tax free. This isn't exactly what I would call liquid though - ie. if you wanted to access your money to invest in something else on a whim.
6) What are you studying? If its anything technical then you might get a good idea that you could risk your money on to create value. But I would stick to high growth stocks before blowing your $1000 on an idea. Thats not exactly what I would call "access to capital".
7) Arbitrage. Lets say you know a friend that buys the trendy collectors shoes at discount and sells them for a profit. He might do this with one $200 pair of tennis shoes, and then use the $60 profit different to go buy video games for himself. If he wanted to scale up, he couldn't because he never has more than $200 to play with. In comparison, you could do 5 pairs ($200 x 5) and immediately have a larger operation than him, making a larger profit ($60 x 5 = $300, now you have $1300 and could do it again with 6 pairs to make an even great er profit) not because you are better or worked at it, but solely because you have more capital to start with. Keep an eye out for arbitrage opportunities, usually there is a good reason they exist if you notice it: the market is too small and illiquid to scale up with, or the entire market will be saturated the next day. (Efficient Market Theory, learn about it)
8) Take everything I just taught you, and make a "small investor newsletter" website with subscribers. Online sites have low overhead costs.