I think a lot of families do this.
They put in money in a bank account in which they dedicate that to their children usually for their college fund or something like that. I do see the point but honestly I think it would be better if you just put it in to crypto. Even if it is locked, fiat money will still lose value over time unlike in crypto especially in bitcoin.
I am cautious about advising individuals on the long-term retention of Bitcoin for their family or children. Its security vulnerabilities make it susceptible to theft, with little to no possibility of tracing or recovery. Instead, a portion of such investments could be allocated to cryptocurrency, while the rest could be diversified into more stable assets like fiat currency and real estate. Although these alternatives may offer lower returns on investment, they provide easier and safer avenues for wealth preservation