You got this all wrong. There is no such things as a safe investment. ... All investment has risk..... Only to things that is sure here in life: tax and death.
How about cloudmining where we get 200% ROI ?
first when bitcoin prices are still high cloudmining very worked well and many are playing. including me when I first played in pbmining and cex.io within 2 months already ROI. but now is very different since bitcoin prices dropped considerably mining is not profitable as it once was