Our UPS deliveries usually have got a lot of neat stuff for the NeatoShop, but today's delivery is a bit unusual. We got a mysterious box from Hasbro. Clearly it's got something to do with the upcoming Iron Man 2 movie ... but what? The box is sealed and we'll open it tomorrow. In the meantime, would you care to wager a guess of what's inside?

Let's make it fun: we don't know if we can give away what's inside because, well, ... honestly we don't know what's inside! There's a good chance that there will be Iron Man 2 swags to give away to one or several lucky readers, but in case there aren't: head on over to the NeatoShop and take a look at our selection of neat T-shirts (don't miss the Science T-Shirts and the newly expanded Funny T-Shirts and One-Liners).

Tell us what you think is in the box. Enter your guess in the comment section. Be as funny and creative, but post no URL or web links, mmkay? (Doing so will invalidate your entry). One guess per comment, please, but you can enter as many guesses as you'd like. IMPORTANT: Please write your T-shirt selection alongside your guess. We'll post the unboxing soon. Be sure to follow us on Twitter and Facebook to be the first to find out!

More photos:

The front side of the box (17" x 20" x 16")

The back side of the box.

And yes, the photos were taken at the NeatoShop's messy warehouse :)

Update 4/22/10: We've unboxed the Mystery Iron Man 2 Box. Congrats to SuperHeroDad and rwhgeek who won! There are still 6 chances to win (including the big prize) ... find out how in the unboxing post.