UPDATE

An exciting development in the mystery of Harry's Japanese baby present. . .

Melissa has informed me that Harry is the proud owner of "a large size shinkansen (bullet train) themed box for keeping things in! When not in use, it folds up compactly, and it closes with a scratchy lid! It's perfect for keeping toys and stuff in! New type!"

She also believes that "scratchy lid" might refer to a Velcro closure of some sort, but so far I've been unable to locate anything like this on the box.

Thanks, Mel!