I've mentioned on this forum previously, but I'm in the process of building a custom box that'll hold the core set, alliance, and outbreak comfortably (with some room to grow). My goal is to make it look like an inventory stash from the first couple RE video games.
I first googled for pictures of a stash from the games, but I couldn't find any, so I ended up playing RE1 and 2 and took some pictures with my cell phone, haha. I ended up with this picture as a reference:
I then went over to my Dad's house, where he has a 3 car garage converted into a work shop. We built this box using MDF (really smooth compressed wood type material). In order to make the lid fit perfectly, we actually built a solid box with no openings, then just sawed off the top to form the lid.