Da-Lite 74490 Key Operated Switch (115V Only) | Full Compass Systems
UbiGear 4 Pcs Magnetic Screw Key Holder Hanger Organize Hook Mount Tool Rack for Lightswitch Switch Panel - Walmart.com
A key to use the lights : r/specializedtools
Key Hanger Cover for Dual Light Switch (US) by Design Slice Print | Download free STL model | Printables.com
Leviton 15A Brown Lock Switch plus Key - 1201-2L
Extra Heavy Duty Industrial Grade, Locking Toggle Switches, General Purpose AC, Single Pole, 20A 120/277V AC, Back and Side Wired Key Guide | HBL1221L | Hubbell
This lightswitch-like thing with a slit in it. On the bathroom wall in my office. : r/whatisthisthing
Leviton Replacement Locking Key for Tamper Resistant Switch 000-55500-PRT - The Home Depot