The dirty secret is we might actually blow up lightning and move to something else. Who knows.

I'd say for now;

• use your Lightning node as a family node

• give your kids an LNBits/Alby/BTCPay/etc. account for them to stack/spend

• ecash would be great (run your own mint on your node [too easy with LNBits]) and give them that

- today's ecash is basically offline, more private lightning

When their balance gets above ~100k sats, use Boltz to swap that lightning, to a UTXO 💜