There are no safe investments, except keeping your money on your savings account, and there you're loosing money year after year as the inflation rate is even higher than the interest rate.
We're doomed.
"Safe" can be a hard term to define. If you mean absolute 100% principal protection at all times with absolutely no fluctuations in account value, you are limited to what is FDIC insured up to $250k. And then of course there's the matter of whether or not the FDIC itself is "safe".
And of course then you are actually losing $, because those savings, checking, and money market accounts and CDs are paying less than inflation. The bank is the only one making $ on this.
Various bonds will pay more, and the issuer will guarantee the repayment of principal at maturity. But the actual value of any bonds will fluctuate at least a little or more depending on numerous factors. There's always at least some risk of defalt, particularly with high yield corporates, emerging markets sovereign debt, etc.
And not all stocks are as risky as others. GE, Walmart, and Coke are much safer (more stable, less volatile) than names like DQ, PXD, NFLX, TSLA, etc.
And better managed mutual funds are even safer, and tend to outperform the overall markets by a wide margin.