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You ask about hold (cold) wallets or hot (spending) wallets?
Here is an exampke of cold (hold) wallet that never touch internet
https://postimg.cc/bsp5FPd6
The cold wallets do not have to be connected to internet. You just use their xpub to deposit only as described here:
https://darth-coin.github.io/wallets/deposit-only-btc-wallets-en.html
And here you have 2 examples of spending (hot) wallets using LN, self custody nodes:
You ask about hold (cold) wallets or hot (spending) wallets?
Here is an exampke of cold (hold) wallet that never touch internet
https://postimg.cc/bsp5FPd6
The cold wallets do not have to be connected to internet. You just use their xpub to deposit only as described here:
https://darth-coin.github.io/wallets/deposit-only-btc-wallets-en.html
And here you have 2 examples of spending (hot) wallets using LN, self custody nodes: