Hockey sticks
Hockey pucks
Bowling balls
Mace
That is the oft-spoke view.
However, the facts on domestic violence don't appear to support it.
https://penntoday.upenn.edu/news/new-penn-research-examines-gun-use-injury-fear-in-domestic-violence
According to that research, looking at 35,000 domestic violence reports from the Philadelphia PD ... 1/3 of the weapons used were firearms.
However, the article also goes on to say that according to say that The National Crime Victimization Survey, conducted since 1973 by the Bureau of Justice Statistics, showed that from 2002 to 2011 guns appeared 5 percent of the time at such incidents.
Generally, when someone goes into "kill mode" in a domestic violence situation, it doesn't matter if they have a gun or other weapon. The victim is dead. Whether from multiple gunshots, stab wounds, or a beating.
As far as accidental deaths, those can be greatly reduced by education - "See a gun, leave it alone. Don't play with it. It's not a toy." Also by teaching respect - "If it's not yours, don't take it."