I saw suitcases like this at Save On Foods last time I was there. In addition to the sizes shown in this picture they had round ones too. The only thing I didn't love about them is the flocked interior. I think the prices were about $14-20ish. They would be nice to use in a room that has a globe or two on display, or as a neat case to store kids' toys.
The photo below is from Ballard Designs, but I think the ones at Save On are identical.