Taking your chosen item, you test its weight with a small toss. Finding it satisfactory—and praying that it's sturdy enough to not break—you wind up a throw and send it sailing into the room.
The bright lights gleam off its surfaces as it flies, twisting and turning in the air. Before it can get far, a nozzle descends from the ceiling and starts spraying the room with green liquid. You take a hasty step back before any can land on you. Your metallic mine canary isn't so lucky.
The moment the liquid touches it, the metal begins to smoke and hiss. Corrosion happens so fast that the metal warps hard enough to shatter the glass.
Just as the acid spray cuts off, a gout of fire bursts from one wall and consumes it, rendering what remained to little more than charred dust.
"Nope," you declare. "Not even going to risk messing with that kind of crazy." You step back and shut the door, even as your can hear sound kind of mechanical grinders whirring to life.