Make sure they know the basic gun-safety rules. Enroll them in an NRA class. My kids go target shooting so much, guns have lost their fascination. Safe gun handling has become second nature for all of us.
Keeping our kids ignorant about basic gun safety is not doing them a service, instead, being uneducated is what leads to accidents.
While "education" is always stressed as a preventative measure in our liberal schools, it is very interesting that this is the one area that children are left purposely uneducated. Proposed gun-safety classes are fought tooth and nail in the local school districts.