More to explore:
Headboard with Secret Gun Compartments Headboard with Easy Access Handgun Compartments – StashVault
Headboard with hidden "gun rack."
Secret Gun Compartment in Bed Headboard
secret compartment headboard
Nightstand with secret compartment (inspiration only...good idea for home without children...perfect for the elderly or a single woman)
maybe not guns but. . . . in secret compartment of curio cabinet
Secret Under Table Compartment-- I'm going to make it, and then figure out what to put in it! (the good pens?)
Secret Compartment Furniture Makers Coffee table with secret gun stash compartment – StashVault
Secret Compartment Nightstand Sliding Top Secret Compartment Nightstand – StashVault @Ashlee Outsen McCully
Headboard with Secret Gun Compartments | StashVault
Hidden Compartment Pallet Wood Nightstand by UpcycledWoodworks
Pallet gun rack..
Not sure about the guns, but i would put a safe in the wall and mount the mirror in front of it... sliding mirror is pretty cool.