No Trek series is complete without a character who would hide knives in the walls and swords in the ceiling.
TOS: Sulu and Chekov 100% have swords stashed in the walls somewhere
TNG: At some point some poor Ensign opened up some paneling to do repairs only for a dozen knives to fall out all labeled "TASHAS DO NOT TOUCH"
DS9: Both Kira and Garak definitely have hidden weapons all over the station.
VOY: Tuvok says it's for easy access in case of emergency.
ENT: Malcolm has so many guns and knives squirrelled away in strategic locations that it could arm everyone twice over. Some poor Ensign tries to take over his station while he's in sick bay for a cold and nearly gets their fingers sliced off by his Workstation Tape Shurikens.
DISCO: Mirror Georgiou has definitely hidden axes and swords and daggers everywhere in her room in case of assassination.
LOW: Mariner canonically does this on the regular




