It is once again time for our collaboration with the always amusing What Is It? Blog. Can you guess what the pictured item is for? You'll have to state a specific purpose for this one.
Place your guess in the comment section below. One guess per comment, please, though you can enter as many as you'd like. Post no URLs or weblinks, as doing so will forfeit your entry. Two winners: the first correct guess and the funniest (albeit ultimately wrong) guess will win T-shirt from the NeatoShop.
Please write your T-shirt selection alongside your guess. If you don't include a selection, you forfeit the prize, okay? May we suggest the Science T-Shirt, Funny T-Shirt and Artist-Designed T-Shirts?
For more clues, check out the What Is It? Blog. Good luck!
Update: Robert McLaughlin was the first to correctly state it is a canary cage for a coal mine -here's an explanation. Among many humorous guesses, The Professor wins a t-shirt for "This is the server used by Facebook to keep users' private information secure!"