i think it totally depend on your interest that where is your interest, if you are interested in gambling then you can invest int in gambling but gambling also need some experience and skill.
Of course, if you are interested on one investment, it's either you have idea about it or you will find one to make it more interesting. 12 BTC to be used in investment is big enough, you could do day trading with that and earn, aside from that you may try risking on investments or investing in gambling sites. its all up to you and where your focus is and what you think is easier for you to manage.