The best thing you can do is just try to use that money only to buy bitcoins, that is the best desicion that you can make at the moment. It has been prooved that bitcoin has been the only one who rised a lot during the last few months, and you can check it by yourself.
It was below $600 at the beggining of this year, and now it is between $6900 and $7000 each bitcoin, isn't it very crazy? buy as much as you can, it will go up by a lot of money as soon as possible.