There's already plenty of threads discussing this sort of stuff but the best investment in my opinion is to just buy and hold bitcoins themselves. Putting them in loans or start-ups or casino bank rolls is very risky and not worth the returns. I think most companies that want your bitcoins as an investment will more than likely turn out to be scams or fail at some point.
agree
you may find many websites that offer you good return on your bitcoin investment but most of them are scam.If you want to invest then you can start your own project with your own creative idea that is better then investing with others
We are already investing our Bitcoins, Some Bitcoins buy and sell and thinking of savings its mean investing our money with Bitcoins or Investing Bitcoins. As your Idea its also a nice thing to invest Bitcoins