Thats good that you can save bitcoin to your children. Its the starting of a good investment. Just to secure there future in the first place you can have have a back up to pay there school tuition and for expenses to the school so in the future they can have a good oppurtunity to start and secure.there future.so they can finish there goal. So when I get old I have a peace of mind because there i  the good hands because of my investment to bitcoin