So a while back I saw a redstone creation that used comparators, redstone, redstone lamps, and a few other materials. It would pretty much take your stock and show it on a scale. It looks a bit like this, I am looking for anybody who knows how to build one or who knows a thread on this on how to build one.
easily done, your chest out puts redstone (as its a trapped) signal depending on stacks, 1 item will do 1 length, a full double chest will do 15, you need to spiral the signal around and up a 'stair' to reach each lamp, so each lamp will represent a differn't numeric level (the top only ever active if 100% stacked)