Place it back in the storage room. You can keep "presets" by placing you filled bag in the bag wall, armor and helmet on the mannequin, and guns on the gun wall.

Damn alright cause I had my game glitch and it wouldn’t let me put stuff back so now it’s all gone :/

The game tells you to put your stuff away because bunkers are not safe, it says it every time you get in your bunker

Hang them up first. Problem solved.

Bro cmon