You can do plenty of things with these bitcoins like gamble, invest, but I don't recommend you to gamble because you will lose your money, another thing that i recommend you to do is holding them in your wallet

But still, It's your choice and do what you wanna do, if you are smart enough, you will understand that gambling is not really good idea, I think that bitcoin price will raise up so like i said, just save your money and wait for price going up.