This is how i got people to stop stealing my extension cords. I added an uncommon 110v twist-lock plug. (I lock up the short segment inside my toolbox) : r/lifehacks

Power Assemblies Spider Box Twist-Lock Generator Power Extension Cord, 50 Amp, 125/250VAC, SOOW Cable Type, Gauge 6/4, California Standard Compatible Lock Extensions, 50' Long, Color Black : Tools & Home Improvement

Extension Cords - Lock to Stop Borrowing

Twist-Lock Plug - Extension Cords - Electrical Cords - The Home Depot

How to Lock and prevent an extension cord from unplugging « Hacks, Mods & Circuitry :: Gadget Hacks

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Locking Extension Cord - Total Fail - Let's Talk about Let's Talk - Viewers Suggestions

Power Assemblies Spider Box Twist-Lock Generator Power Extension Cord, 50 Amp, 125/250VAC, SOOW Cable Type, Gauge 6/4, California Standard Compatible Lock Extensions, 50' Long, Color Black : Tools & Home Improvement

Twist-Lock Plug - Extension Cords - Electrical Cords - The Home Depot

Twist-Lock Plug - Extension Cords - Electrical Cords - The Home Depot

BadAss Click-To-Lock Extension Cords