When Ben, Sun, and Frank were headed to the outriggers, Ben purposfully tossed his backpack that he's been carrying, since the hotel scene with Jack, at the head of the other two outriggers.

It was intentional and I could tell that he had no plans of grabbing it before heading off to "their" Island.

I wonder what is in that box in the bag that would make him leave it where he did...

Any ideas?

Maybe he didn't expect to get smashed in the head with a boat oar and would have grabbed.

Interesting that it's infront of the other outriggers, as it seems likely Locke and company will end up in those boats too. Since Ben is still on Hydra, he has a chance to reclaim his property at the very least.

I've wondering when they'll let us know what's in it.

I noticed this as well but I didn't get the impression that he was abandoning it. He tosses it against the side of one of the out riggers and it makes a thud. felt to me that he was a.) putting it somewhere out of the way while her prepares the boat, and b.) making you the audience aware that he is in fact carrying something. I would wager in the next few episodes he will wake up and go straight to that pack and pull something out that is amazingly useful at exactly the right time.

- b/c he's always got a plan.

Maybe he knew he was about to be hit with a oar and didn't want it to be smashed. I mean with all the TTing going on, maybe he knew this and prepared for it.

Regardless, he's still on the beach, unconscious with whatever's in his pack. So he hasn't lost it.

And yes, I'm sure it has something in it that'll be pulled out at exactly the right time to fit a very specific situation.

Or it's his toiletries.