That's a good way of using your winnings but to be specific what is/are the investments that you think that can be worthwhile for you? For me, I will use it for trading and I will save it for holding and if I keep on winning, I will use some of it for using as my capital in gambling so that my capital will be safe already.
Trading is a good way of retaining your wealth and possibly increasing it too. You just have to learn how to trade though, at first it will be hard to learn it and you will lose some money. Don't worry it's part of the learning curve. Then you can also try to invest in casinos. It's a good long term investment too.
you should have a passive income beside an active income, then the answer is to invest it on something real.