I first thought you’d somehow typoed X-rays. Seems to me any T-ray demo would pale compared to this: Peeling Scotch Tape Powers X-Ray Machine | Discover Magazine
When my husband’s lab set up a Tesla coil for our daughter’s 7th grade science class.
Besides the coil itself, than which few things are cooler, the sight of a parcel of particle physicists behaving like little boys up to something wicked was very amusing.
Way back when I was teaching electronics in the USAF I had a class that engaged in dangerous horseplay. They were unimpressed by my safety lecture and brought in some airman nothing who claimed the military was overstating the need for safety. I was curious, so I let him speak. To demonstrate his point, he plugged in a high voltage transformer (for neon lights, probably a few thousand volts), took one of the output wires in his hand and raising it above his head explained that it was not dangerous because he only touched one of the electrodes and there was no path to the other electrode. Just then his foot moved over a floor fastener that was grounded. He stiffened, rotated 90 degrees and ended up flat on the floor.
I unplugged the transformer and made sure he was OK, escorted him out of the room and resumed my safety pitch. He’d made my point.
I had to go to a management conference about leadership and communication.
I loathe these things
But, there was these one thing. We were told to watch a group of basketball players with multiple balls pass the balls around. And keep track of how many times they passed the balls.
when it was over, they asked everyone what number they got. some people got the right number, some did not.
then they asked if asked if anyone noticed anything odd about the video. nobody said anything.
then they played the video again, and said " look for anything odd"
and sure enough, there is a guy in a gorilla costume walking through all the basketball players passing the ball around.