I believe this long-term investment is quite a good idea, depending on the trends of the coin on the crypto market which need to be studied before investing. Provided the children are made aware of the crypto wallet address, this can serve as an inheritance for them in the futureMost parents, invested money, that being your local currency, into some saving account for you to access when you reach adulthood. But, now that money is slowing shifting to crypto as the currency becomes more accepted and used, will any parents here consider saving a small amount of crypto and holding it (without selling it) for the kid when he or she reaches 18?