Your rules sound like the arrangement my parents had.
Daddy ruled the garage. He kept all his “man stuff” out there. He had a workbench (completely covered in stuff), a tool box, things hanging on the walls, and haphazard shelves of stuff.
Momma had a special drawer in the kitchen (NOT the junk drawer!) for HER tools: a little tack hammer, a pair of pliers, several screwdrivers. She would perform her small projects with her tools, and then put them away.
There would be a ROAR of righteous indignation if Daddy tried to “borrow” any of her tools. She would chase him out of the kitchen, and point to the garage.
Daddy was smart, though. He’d wait until she was busy on the phone or visiting the bathroom, and he’d sneak in and take the tool.
If she found something missing, she knew. Oh, she knew.
Her next visit to the store, she’d quietly buy another whatever, and slip it into the drawer.
I asked her about the whole process.
She explained the garage was such a Gawd-awful mess, it was just easier to buy a new one than to try to find whatever he took.
May I suggest a subsection to No. 2? We can call it “2a.”
“If you save something for a particular purpose, but do not use it immediately, you will not be able to locate it because someone else encountered the something and either took it for his own use, or determined he didn’t need it, SO HE THREW IT AWAY.”
~VOW