Soooooo......

[Alex]

I wouldn't do it, but only because I wouldn't do any shopping that requires any additional effort beyond the 10 minutes I'm willing to spend in a store (or online retailer).

But the concept of grab bags doesn't strike me as particularly Japanese. Setting up a system to exchange seems like a reasonable next step. Heck, I seem to recall last year it wasn't uncommon to see a friend excitedly post about having bot a Woot Bag of Crap and then following up a few days later asking if anybody wanted whatever it was that they got.