What Is It? Game 117

W00t! It's time for our collaboration with the always intriguing What Is It? Blog. Can you guess what today's mysterious object is for?

Place your guess in the comment section. The first correct guess and the funniest (but wrong) guess will win a Funny T-Shirt from the Neatorama Shop. One guess per comment, please. You can enter as many guesses as you'd like. Please let others play and post no URL or web links. Doing so will forfeit your entry.

For more clues, check out the What Is It? Blog. Good luck!

Update 11/27/09 - the answer is: A dust container for a compressed air duster, "used in spraying field and truck crops," patent number 1,877,778. No one got it right (in time anyhow, there were correct answers posted after the What is it? Blog has posted the answer). Congratulations to two funny guesses who got the prizes instead:

Melphistopheles who said "Jar-Jar" and davisbg who said "Beginner's Ship-in-a-bottle Kit"