Spryte Laser Reflector Flagstick Nut - Par West Turf
Chamber room prop Laser reflector mirror lens to reflect the laser beam escape game prop for laser maze real life adventure game|Access Control Cards| - AliExpress
Optex PL10F Small Corner Cube Reflector 32mm x 20.2mm for laser/LED coaxial sensors
ESA - Laser Retro Reflector
E20990 - Reflector for retro-reflective laser sensors - ifm
How Do You Solve a Moon Mystery? Fire a Laser at It - The New York Times