Investing in crypto for your children is not a bad idea but one thing we need to know about investment is the investment that seems profitable today might not be profitable in the near future. For instance, buying and holding of shares was a profitable investment some 10 years back but in today's world of investment,it is not profitable. It would be better we invest in businesses like real estate that we are sure will always be sought after by people than crypto currency that we are not sure of what it tends to become in the near future.