With the signature campaigns this is already possible and you can do some trading or gambling without any doubts for that.
I recommend to do some signature campaigns because its way more safe than other methods nowadays.
All you mention is correct and its possible to earn 0.1 BTC or more. Stick to signature campaign as this is a sure way to earn plus add it with your possible income in trading,be careful also cause you can lose also here. I cant recommend gambling, unless you are experienced or lucky enough to play it.