This is defensive, and could invite challenge. Whatever you create that holds significance for you, will work. If it holds significance for others, all the better. Tools and Procedures Protection is the cheapest form of insurance you will find anywhere in the universe. You can ask for coverage on other adults and events, and it will help, but there are so many variables involved.
Children are under the auspices of their parents protection until puberty.
Once their hormones kick in, Nature considers them adult, and they need to take care of business themselves. Again, the best formula for designing your imagery, is to use the traditional as a springboard, then fashion the rest from your essence. For the average clearing of home, auto, person, etc., sage is more than adequate. I prefer using white sage because it really makes a lot of smoke. Don't miss the hidden corners.