Why bother? You'll never be able to get any item back in it's package with the ease that the manufacturer claims. They have special robots that pack the stuff, normal humans just can't compete. The most effective solution is to just to wad up the parts in a ball as tight as you can and CRAM, CRAM, CRAM! Good luck, I think you'll do alright as it sounds like there isn't a lot of pieces you'll need to worry about.