#1 Secure the gun(s) in as small, handy, easy open safe when not being carried;
#2 Teach the children proper respect for others and the property of others;
#3 At a appropriate age teach firearm safety appropriate for the maturity level (starting with "there's a gun - don't touch it).
Firearms in the home is never an easy situation. However, firearms in the home leads to good parenting skills being developed and honed.