I remember this topic coming up some time ago when people were talking about the fact their wives could own a gun but not them. Which then spun off into buying sporting archery kits, crossbows,blow pipes. But the odd thing is something came up in a conversation with a PNP officer regarding family safety. His advice was was to just go get one and put it in my wife’s name, I hadn’t brought up the topic but one of those random things we end up talking about.
In reality if I shot someone in the house the license for the firearm covers the ownership of my wife but the usage on the property can be utilized by myself if needed. With kids in the house not something to leave lying around with “easy access” but as I know from a friend of mine the clunk click of his shotgun loading behind his front door as people tried to break in was enough to scare them off. Something that isn’t as dangerous but people might find useful for emergencies are gas grenades, we have here but they are designed for Airsoft. You fill them with BB’s and then inject the grenade with gas, creates a load noise and fires BB’s everywhere and would freak out a lot of people with a low risk of injury.