BitBond is a P2P lending site where you loan to people and earn pretty decent interest too,haven't tried it yet but Ive heard good things about them.
also if you choose to invest with them try to find people with lots of repaid loan. Higher chances of you getting paid back
i would be carefull with thoose lending platforms.. ive never get my money back so far...
Best investments that you can make with Bitcoin is just buy low and sell high that is the best option to do that.
But you never know what will happen with the value and that is the problem, you never know when to sell or buy it.
this option is good but these days it is not so profitable.
bitcoin price has been getting more and more stable with small changes so it is hard to profit from these changes unless you risk a lot of money.