My daughters are 22 and 25, so no mishaps from them. When they were younger, they just liked the smell and being around the brewing, never really interested in the process and participating. They were interested at a younger age on pouring the beer from the kegerator. They both learned very young how to pour the perfect beer.
One time while brewing, one of my huskies caught on fire. He was licking the floor after a boil over. I turned around to see him on fire and quickly put it out! His fur was singed for months. He did not care, he got to lick up sweet wort plus he had plenty of more fur to go before that hit skin. That beer became Burnt Dog Porter.