I presently store my modest pistol collection in a wooden vault (bookcase). It is probably a character flaw but I have imagined an upgrade to the "gun room" security approach shown in this video when/if it becomes available.
https://www.youtube.com/watch?v=IS2PtmM9mwU While presently unsafe/illegal, to say nothing of the hazard posed to family pets, the approach demonstrated in the video would probably be quite effective. As well as obviate the need for a Polish-English dictionary.