check sethbling, he has made a storage thingy with minecarts with chests

Well, the sorting system would be easy, but the recall system would be hard. It would have to involve a lot of hoppers, rails and redstone. It would probably be easier if you only wanted to recall a small amount of items. For example if I were to explore somewhere my inventory could fill up with flowers, seeds, ores, cobble, dirt, wood, saplings. The only things I'd want to recall are the ores wood and saplings. But I would still want to be able to access the other chests just in case I decide to decorate my house with flowers, or expand my wheat farm. If you only were to recall certain items but leave the rest to be stored somewhere that you can still access it would be a lot easier. But that's just what I was thinking.

given he wants a sorting system involved, it's likely a "push button, have dispenser shoot it at you or dropper put it in a chest for you." type idea.

What do you mean by recall system? Chest minecarts that bring you your stuff when you push a corresponding button?

you realize that that'd involve an absolutely MASSIVE amount of redstone hoppers and chests, right?