The best way to store cryptocurrency safely is to use a hardware wallet, such as the Ledger Nano S or Trezor. Hardware wallets are physical devices that store your private keys offline, keeping your funds secure from hackers. You can also use a software wallet, such as Exodus, which stores your private keys on your computer, but this is less secure. It is also advisable to use a separate wallet for each type of cryptocurrency, and to regularly back up your private keys in case of data loss.