what an awesome idea! via apartment thereapy, here are your DIY instructions:
The trick is to find a smaller suitcase or better yet, a briefcase. You can easily add shelves with pieces of reclaimed wood or head down to your local hardware store and have pieces of wood cut to the measurements of the case. I love the look of keeping the wood natural (or even with a dark stain) but there's always the option of upholstering them to match the interior fabric of the case. Attach the case to the wall and add a mirror to the front of the case so it's functional both inside and out.
if you do this, send photos, i wanna see! :D