Sounds like you're asking about multi-coin hardware wallets. Though hardware wallets seem to add more coins over time, the process is fairly slow. Best advice to create your own cold wallet unfortunately takes a fair amount of work creating and securing an offline-generated airgapped cold wallet for each coin you want to secure. If you have small amounts of many coins, I suggest creating an extremely secure Coinomi wallet (which is a mobile multi-coin wallet).
RE: 4 ways to secure your bags... #bitcoin, #altcoins, #cryptoasset tokens, whatever. A @notsofast security primer.
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4 ways to secure your bags... #bitcoin, #altcoins, #cryptoasset tokens, whatever. A @notsofast security primer.