It's once again time for our collaboration with the wonderfully entertaining What Is It? Blog. Do you know what the pictured item is? Can you make up something wonderfully wacky? That's what we're looking for: the funniest and most creative guesses. We will award t-shirts from the NeatoShop to two commenters who post the cleverest, funniest, or most outlandish uses for this thing!

Place your guess in the comment section below. One guess per comment, please, though you can enter as many guesses as you'd like in separate comments. You have until Friday evening to come up with great guesses.

Please write your T-shirt selection alongside your guess. If you don't include a selection, you forfeit the prize, see? May we suggest the Science T-Shirt, Funny T-Shirt and Artist-Designed T-Shirts?

Now, you don't have to know the answer to win! Go see another picture of this thing at the What Is It? Blog. Good luck!

Update: this odd tool is a Crandall hammer, it's a stone dressing tool made from several sharpened spikes which are held together with a frame and wedge. It was used to roughen the face of cut stone so that mortar would adhere to it. You learn something new every day! Erin Geddes guessed it was "For when you need to repair or make comfort adjustments on your bed of nails." Ha! That's good for a t-shirt from the NeatoShop! So was Edward's guess: "Neatorama's Ban Hammer." Yeah, this would be a good tool for that! Congratulations to both. See the answers to all the items of the week at the What Is It? blog.