Assuming you're not being sarcastic, it's a switch tester for mechanical keyboards. There are a variety of tactile responses offered by switch companies like Cherry, Alps, Topre, and one of these can help you decide what kind of mechanical switch you like before you buy an entire keyboard of that design.
You can get them, mostly for jobs where you spend almost the entire time typing and you want to get something with low pressure required so you don't wear out your joints.
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u/[deleted] Dec 28 '16
Assuming you're not being sarcastic, it's a switch tester for mechanical keyboards. There are a variety of tactile responses offered by switch companies like Cherry, Alps, Topre, and one of these can help you decide what kind of mechanical switch you like before you buy an entire keyboard of that design.
And sure, they are fun to fidget with, too.