I had to scrabble about a bit in my Christmas box to find enough little things to fit in the compartments and then put them all together.
I have two larger oblong boxes from The Works that contained small Christmas tree decorations which I plan to decorate when I have more time after Christmas. The slightly larger compartment size in these, I think, should give me a little more scope to create a more detailed picture in each.
I just need to keep my eyes open for some more tiny bits and pieces to go in them.