warped room box presents a challenge

In order to use the kitchen-related miniatures I had collected in anticipation of a project that never marterialized, I purchased a big & cheap roombox. 
However the larger pieces (top and bottom) were warped so I went through a prolonged process trying to flatten them out - - weights, misting the wood, more weights.   Not very successful though.
So, I went ahead and put it together using glue and resorting to nails and heavy weights again.

Finally it is together flaws and all.  Just hoping that once the minis are in the flaws won't be too noticeable.