[Deposit Only Bitcoin Wallets](https://darthcoin.substack.com/p/deposit-only-bitcoin-wallets)
[Be Your Own Bank](https://darthcoin.substack.com/p/bitcoin-be-your-own-bank-think-like)
[How To Build Your Bitcoin Cold Wallet](https://darthcoin.substack.com/p/build-your-hodl-btc-cold-wallet)

These are probably the relevant ones 

OneOneSeven

Hopefully can find some options for it outside of Rasp Pi for hardware (not exactly security purpose built hardware, nor designed to be).

bitcoin

Hardware wallets

Thatguydude

Thanks, I'll check the guides out. 

Hopefully can find some options for it outside of Rasp Pi for hardware (not exactly security purpose built hardware, nor designed to be).