I'm afraid this is not nearly as interesting as the engine test stand vehicle, but it's a thing I found that was initially a mystery for me. It was in my pocket at the end of the day, so I took a picture of it for you. Some of you will know what it is right away and may even have used one, and I ask those people as usual to abstain from the game. I'm always on the lookout for something that will test everyone, but collectively you're so smart that it's tricky.
So aside from a thoroughly filthy laptop keyboard (included in the picture for scale, not style) what do you see here?
As usual, silly answers are as welcome as genuine guesses.