I don't have enough money in to justify a hardware solution like Trezor or Ledger yet. As far as the 12 mnemonic words go, I do use that for wallet backup.
I'm still new to this stuff. I already managed to send a small amount of money into a wallet address with no private key.

The thread was inspired by me wanting to setup a miner that is hopefully fast enough to get me accepted into a mining pool. I'm currently shopping for an ASIC solution. In the meantime, I can do GPU (I think) with a software I downloaded.