really nice list of all those bitcoins and that thell the options or places available where we can invest our bitcoins but i would say there is some risk is involved on all of those,in gambling sites and casinos as well as lending them,because of so many scammers,but yet they are legit ones.
There are some casino sites whom we can trust to invest our money but apart from that I don't see any legit place to invest bitcoins as majority of the will turn up to be scam in long run.